Abakwi is a fictional language and was written by James Finley.

Abh was crafted by Hiroyuki Morioka. It is a professional fictional language.

Achaean, an auxiliary language, was designed by Edward Hatfield.

Achenu was created by Wil Guilford Jr. as an artlang.

Acian is a personal language. It was developed by Ace.

Adam-Man Tongue is a philosophical language and was invented by Edmund Shaftesbury in 1903.

Adare was written by Asier G. It is a fictional diachronic language. The web page is in Spanish.

Adawa, a fictional language, was crafted by Bruce Foerster.

With a vocabulary derived from Indo-European roots along lines similar to, but distinct from, the Germanic family of languages, Adelic has a rich internal history, giving it the sound and texture of an old European language and making it well suited for gaming. The site features a grammar, sample texts, a unique script and a dictionary with over 2,000 words.

Adin was designed by Nathaniel Knight as a fictional language.

Adjuvilo is a fictional language. It was created by Cola/Esperema.

Adúlad is a diachronic language and was developed by Trevor Wentworth.

Adûnaic was invented in 1946 by J.R.R. Tolkien. It is a fictional language.

Advanced English, an auxlang, was written by Pascal A. Kramm.

Aeks Nótrï Nódikem was crafted by Niki Eve White as a fictional language.

Ælitian is a fictional language. It was designed by Matthew See.

Aeo is a fictional language and was created by Jonathana Tegire.

Aercant was developed by Michael Bush. It is an IAL.

Aertran, a fictional language, was invented by A.B. Basham.

Aéstari was written by Nick Kalivoda as a personal language.

Attobrah designed Afrihili to be an auxiliary language for the continent of Africa, with a phonology, vocabulary and grammar all derived from African languages. The grammar will be especially unusual to speakers of European languages. Unfortunately, little information is available about Afrihili.

Ahlimite is an artlang. It was crafted by John Whatmough.

Ahua is the language of the Ahuans and was designed by Richard Kennaway.

Ailurin was created by Diane Duane. It is a professional fictional language.

Aingeljã, a personal language, was developed by Ángel Serrano. The web page is in Aingeljã|English|Spanish.

Al Bhed was invented by Final Fantasy.

Ålaku was written by Rory as a fictional language.

Alarian is a fictional diachronic language. It was crafted by Noby Nobriga.

Aligian is a personal language and was designed by Brandon (Mizenki).

This language attempts to be as true to its name as possible, containing primarily nouns. Created by Tom Breton, AllNoun does, however, use four operators as part of its grammar. Breton has primarily specified the grammar of the language (which resembles a simple programming language and in fact has been modified by Breton for use as such); he uses English primarily to illustrate the noun vocabulary. Very atypical, AllNoun is good inspiration for a fictional language for aliens.

Almalinian was created by Bryant K. It is the language of the two Races of Cardë: Men and Celts.

Alpha Smart, a fictional language, was developed by Jack Durst.

Alphistian was invented by Tony Skags as for the Alphistia micronation.

Alrusomanz is a personal language. It was written by Elliot Jackson.

Alurhsa is the language of The Alurhsa people and was crafted by Anthony Harris.

Alwato was designed in 1871 by Stephen Pearl Andrews. It is a philosophical language.

Ambarnic, a diachronic language, was created by Jordan Lavender.

Amelic was developed by Almirus as the language of Nazaredi Yeshua, Yehudi no Meoki (Jesus of Nazareth, King of the Jews). The web page is in Portuguese/English.

Americai Speak is an international auxiliary language. It was invented by Ruby Olive Foulk in 1937.

Amerysk is an international language and was written by Paal Filssunu.

If you have ever longed to see one of Tolkien's languages brought to completion, you will love Amman-Iar, created in the spirit of Sindarin and Quenya and set in a new continent of Middle Earth. Originally inspired by Elvish, Amman-Iar has grown into something quite different, with a unique flavor of its own and a richly realized grammar. Amman-Iar is one of the few constructed languages on the Web with a detailed fictional history of word derivation.

Amtorian was crafted in 1938 by Edgar Rice Burroughs. It is a professional fictional language.

Anaqaen, a fictional language, was designed by Chris Bouchard.

Anawanda was created by Tommasso Donnarumma as for the Anawanda tribes of the Southern-Eastern Archipelago of Elaire.

Ancallon languages is a fictional language. It was developed by Aran Kuntze.

Ancient Language is a professional fictional language and was invented by Christopher Paolini.

Ancient Tongue of the Wise was written by Mike Singleton. It is a professional fictional language.

Andanese, a personal language, was crafted by Andrew Leventis.

While less well known than the officially sanctioned Klingon language, An'dorian is as richly developed and represents the language of the blue-skinned Andorians from the original Star Trek TV series. Over 3000 words are defined, along with a grammar and sample texts. Andorian has eight noun classes and an elaborate TMA system.

Anglish was designed by Bryan Ashley James Parry as a jargon.

Anglo-Romance is a personal language. It was created by Mattia Suardi. The web page is in English|Italian.

Not every constructed language has to be large and complex. Anglo-Saxon Computerese is the hundred or so terms you would need to be able to talk about computers in Anglo-Saxon (Old English). Most terms are compounds of real Anglo-Saxon words: for instance, the word for "computer" is circolwyrde.

Anikin is a fictional language and was developed by Felix Brender. The web page is in German.

Animalic, a simple language made by Tolkien's cousins, was the first of someone else's constructed languages that he was exposed to, and it inspired Nevbosh.

Aninese was invented by Andre Steffens. It is the language of Uteged.

Anklis, a fictional language, was written by Martin Ferretti.

Antapa was crafted by Jan Havlis as a fictional language.

Antido is an auxiliary language. It was designed by de Saussure.

Antique Lantian is a personal language and was created by Bucchianeri Marco. The web page is in Italian.

An'tur was developed by Sander Dieleman. It is a personal language.

Ape (Mangani), a professional fictional language, was invented by Edgar Rice Burroughs by 1912.

Apralios was written by Christopher Mules as a fictional language.

Aqobagena is a personal language. It was crafted by Quentin Read.

Aquitan is a fictional language and was designed by Frances de Vilalonga.

Arēsæd was created by Drydic_Guy. It is a fictional language.

Aran'Esei, a fictional language, was developed by Eric the Best.

Arcaicam Esperantom was invented by Manuel Halvelik as an artlang.

Archeía is a fictional diachronic language. It was written by Anselm Huppenbauer.

Arden was crafted by Tommaso Donnarumma.

Arêndron is the language of the people of the Arêndron Empire and was designed by Michael S. Repton.

Arionak was created by Eric Anger. It is an auxlang.

Arkian is the official language of the micro-community Ark. Besides its unique set of source languages (pick another constructed language with words drawn primarily from Turkish, Finnish, Chinese and Czech!), Arkian has a unique script and unique grammatical features like indefinite animate gender and frame clause construction. Unfortunately for English speakers, the 1500-word Arkian dictionary is in Czech.

Arlipo, an IAL, was developed by Lubor Vitek. The web page is in Arlipo.

Ar-na-Kamyt was invented by Edward Field as a jargon.

Arnira is a fictional language. It was written by Kelahäth Ohar.

Aronian is a diachronic language and was crafted by Dillon Shaw.

Arulo was designed in 1925 by Max Talmey. It is an international auxiliary language.

Arvan, an international language, was created by Nicola Curat. The web page is in French.

Arvorec was developed by Deiniol Jones as an artlang.

Ascenderati is a fictional diachronic language. It was invented by John Whatmough.

Ascian is a professional fictional language and was written by Gene Wolfe.

ASD-STE100 is a logical language.

Asha'ille was designed by Arthaey Angosii. It is for the quadripedal species that originated in the Central Plains of Cresaea.

Asht, a loglang, was created by SPH.

Asmeni was developed by Kári Emil Helgason as a fictional language.

Ašnaî is a fictional language. It was invented by Maknas.

Asrord-Dânis is a fictional language and was written by Asier. The web page is in Spanish.

Atarel was crafted by Seiji Suenaga. It is a personal language.

Atevi, a fictional language, was designed by C.J.Cherryh; Rodlox.

Atlan (Atlantean) was created by Graham Mabey as a diachronic language.

Atlango is an auxiliary language. It was developed by Richard A. Antonius.

The language of Disney's animated film, Atlantis: The Lost Empire. The Atlantean language was developed by Marc Okrand, creator of Klingon, and spoken by Leonard Nimoy (Spock!) among others.

Atlo-Greek is an auxlang and was invented by Edward Field.

Attrendian was written by Kevin R. VanDenBreemen. It is a fictional language.

Aubhárith, an artlang, was crafted by Anselm Huppenbauer.

aUI was designed in 1950 by W. John Weilgart, Ph.D. as the language of Space.

Auld Elvish is a professional fictional language. It was created by Harvard Lampoon.

Aulingese is the language of Uteged and was developed by Andre Steffens.

Auxilingua was invented by Jay Bowks. It is an IAL.

Avaeran is a fictional naming language.

A separate language family from Eldarin (which contains all the other Elvish tongues covered here), Avarin is almost completely unexplored. If you ever wanted to derive your own Elvish language, you can invent an Avarin tongue, descended from Primitive Elvish.

Avesta, for of the Ankanya, the people who fell from a star, the gods (enkan) of Atlantian legend., was crafted by H. Ellis Ensle.

aw'ingiwa was designed by Apollo Hogan as a fictional diachronic language.

Awolang is a stealth language. It was created by Daniel Carrasco. The web page is in Spanish.

Axunashin is a diachronic language and was developed by Mark Rosenfelder.

Ayeis was invented by Asier G. It is a fictional language. The web page is in Spanish.

Ayeri, a fictional language, was written by Carsten Becker.

Ayhan was crafted by Barry Garcia as a fictional language.

Azak is a personal language. It was designed by Christophe Grandsire.

Baanzish is a fictional language and was created by Rupert A.H. Barnes.

Babalo was developed by Ajin Kwai. It is a fictional language.

Babm, an international auxiliary language, was invented by Fuishiki Okamoto.

bac was written by Matthew Butt as a personal language.

Bahasa Tumilenia is an international language. It was crafted by Tha Original Penrithian Bandanna Kid.

Bahasan was designed by Leo John Moser.

Bala-i-balan is a stealth language and was created by Muheddin circa 1550.

Balbylon is an auxiliary language.

Barakhinei was invented by Mark Rosenfelder. It is an artlang.

Barallen was written by Kevin.

Barmuur, a fictional diachronic language, was crafted by José Martínez.

Baronh was designed by Hiroyuki Morioka as a fictional language.

Barsoomian is a fictional language. It was created by Edgar Rice Burroughs by 1900.

Barushlani is the language of Andal and was developed by Boudewijn Rempt.

Basic Anglo-Saxon English was invented by Jeffrey Henning. It is a fictional language.

Basic English (Basic is an acronym for "British American Scientific International Commercial") was designed as a subset of English. Any Basic English text is also a valid English text, but Basic English has just 850 core words (not counting inflectional forms); extensions to the lexicon are permitted for specific subject domains. The Bible and other texts have been translated into Basic English. For a time, Ogden hoped Basic English would be used for teaching English as a second language, but because Basic English permits the full complexity of English grammar, this was not practical.

Basple, an auxlang, was written by Kumouri Endriago.

Bendeh was crafted by Nathaniel G. Lew as the language of a fictional parallel Earth.

Benjish is a personal language. It was designed by Benjamin Bruce.

Berendt is an IAL and was created by Alfred Berendt.

Bitruscan was developed by Jay Bowks. It is an international auxiliary language.

Biyuron, a fictional language, was invented by Pablo Flores.

Blaaninian is a succinct and flexible language, designed in theory to sound like a cross between ancient Greek and Hebrew, although this is not always achieved in practice.

Black Speech was written by J.R.R. Tolkien as a fictional language.

Blaia Zimondal is a philosophical language. It was crafted by Cesare Meriggi in 1884.

Blissymbolics is an international language and was designed by Charles Kasiel Bliss in 1949.

Blitz English was created by Mark Hucko. It is an auxiliary language. The web page is in English|German|French|Slovak.

Bogomol, a fictional language, was developed by Terrence Donnelly.

Bolak was invented in 1899 by Leon Bollack as an auxlang.

Bonjang is an IAL. It was written by Victor Medrano.

Bopal is a philosophical language and was crafted by M. Streiff by 1887.

Borg was designed by Terrence Donnelly. It is for a cyborg culture with a collective consciousness (from Star Trek).

Brandonian, an international auxiliary language, was created by Jordan Kay.

Breathanach is the first constructed language inspired by Q-Celtic on the Web. It is the "Q" to Brithenig's "P": what might have happened if Latin had been filtered through a Gaelic phonology. The site features a grammar and sample texts.

One of the best of the fictional languages on the web. Brithenig is the language of an alternate history, being the Romance language that might have evolved if Latin speakers had displaced Celtic speakers in Britain. Brithenig has undergone sound changes similar to those of Welsh, and has borrowed from Old Celtic and from Old, Middle and Modern English.

Broken German was developed by Joshua E. Horn as an international language.

Broyan was invented by Boudewijn Rempt.

Bruceish is a fictional language. It was written by Bruce A. Brejta.

Brujeric is the language of witches and warlocks of Brujerland and was crafted by Gregory H. Bontrager.

Bryatesle was designed by Miekko. It is a personal language.

Bucovian, a personal language, was created by Nicola Curat. The web page is in French.

Bvazred was developed by Anselm Huppenbauer as a diachronic language.

C-14 is a personal language. It was invented by Rodlox.

C-23 is a personal language and was written by Anthony Docimo.

C-24 was crafted by Anthony Docimo. It is a fictional language.

Cacone, an auxiliary language, was designed by Daniel Sacks.

Cadhinor was created by Mark Rosenfelder as an artlang.

Calénnawn is a fictional language. It was developed by René Uittenbogaard.

Çanil is a fictional language and was invented by Maknas.

Canis was written by Ron de Leeuw. It is an auxlang. The web page is in English rv:1.7.3) Gecko/20040910.

Cannic, a personal language, was crafted by Nikhil Sinha.

Ca'olaeg is a fictional language.

Ceiteish was created by Eric Anger as an IAL.

Celltiecc is an international auxiliary language. It was developed by Duke Keenan; Nathaniel Ament-Stone; Dean Powell.

Cepperjoleddicg is a personal language and was invented by Chris Paull (Zeke Fordsmender).

Ceqli was written by Rex F. May. It is an international language.

If you have ever wondered what language whales might speak, you will be interested in Cetonian, the language that the extraterrestrial cetaceans of the planet Wuiou (called Cetonia in English). All words are made up out of eight syllables, each approximating a sound that can be made by the cetacean's blowhole: ha, ho, hui, ma, o, u, wa, and wui. A typical sentence is huiuwui.ha.uhuiu.wui.ho.huiwaho, "The dolphin bit the fish." Landau looked to the songs of Terran whales and dolphins for inspiration.

Chicken, a parody, was crafted by Jack McLaren & Pat Spacek.

Chickenese was designed by Damon M. Lord as a personal language.

Chin'yn-theuk is a logical language. It was created by script.

Ch-m Tlondor is a fictional language and was developed by Jeff Lilly.

Cho-ba was invented by Thomas Leigh.

Choton was written by Pascal A. Kramm. It is an auxiliary language.

Chovur, a fictional diachronic language, was crafted by J. Fatula.

Chunotl was designed by Pablo Barenbaum as a personal language.

Chusole is a fictional language. It was created by Glenn Kempf.

Cilthic is a fictional language and was developed by Daniel S. Andersen.

Cinpzy was invented by Dazi. It is a parody.

Ciravesu is the language of a fictional parallel Earth.

Miller has invented quite a few languages spoken by the furry aliens of Mizar, including Cispa, for which he has published on the Web a font for the Cispa alphabet, a short grammar and a dictionary.

Clalia, for a small nomadic people, was crafted by John.

Classical Yiklamu was designed by Mark P. Line as a loglang.

Clavis Convenientiae Linguarum is a philosophical language. It was created by Joachim Becher circa 1661.

cni-vcti is an auxlang and was developed by Omid Ghayour.

Coastal Zein was invented by Drydic_Guy. It is a fictional language.

Coeniathen, a diachronic language, was written by Anselm Huppenbauer.

Common Germanic was crafted by James Johnson as an IAL.

Comunleng is an international auxiliary language. The web page is in Spanish.

Çomyopregi is an artlang. It was created by Damátir Ando. The web page is in English SV1; .NET CLR 1.0.3705).

Conlangs of Destruction is a fictional language.

Constructed Language #4892 is the language of a role-playing campaign and was invented by Justin B. Rye.

Corint was written by Daniel Andreasson. It is a fictional language.

Cosmian, an international language, was crafted by Wilbur M. Law Beatty by 1922.

Criollo was designed by Chlewey Thompin as a fictional language.

Cruons is a personal language. It was created by Stefan Lubbersen.

Cuërna is a personal language and was developed by Jack McNeill.

Curco was invented by Pablo Flores. It is the language of a fictional parallel Earth.

Cyberyak, an auxiliary language, was written by Eric Beaubien.

Cytrurian was crafted by Martin as a personal language.

Ða difî is a fictional language. It was designed by Jonathan North Washington.

Da Mätz se Basa is a and was created by Henrik Theiling.

Dael was developed by Dallin Woolstenhulme. It is a fictional language.

Daimyo, for a creature like a gargoyle, was invented by Muke Tever.

Daisilingo was written by Jian Huang as an auxlang.

Daléian is a fictional language. It was crafted by Carsten Becker.

Dalgarno's Universal Language is a philosophical language and was designed by George Dalgarno circa 1661.

This language was used by the Lardil tribe, of Mornington Island off the coast of Australia. It was used as an initiation language for men and was an unusual variant (or speaking style or slang) of the "everyday" Lardil language. Damin is fascinating and well worth learning about.

Danan was created by Bruce Rimell. It is a personal language.

Danarib, a fictional diachronic language, was developed by Gary Wann.

Danovën/Arovën was invented by Joshua Shinavier as a logical language.

Dapnant is the language of the dawn of humanity. It was written by David Durand.

Darmok is the language of the Children of Tama from Star Trek and was crafted by Raphael Carter.

Darseni was designed by Libor Sztemon. It is a fictional language.

Darynese, a fictional language, was created by Rebecca Harbison.

Dashul was developed by Anthony Raymond Bullard as a loglang.

Dêbiua is a personal language. It was invented by Hans Straub.

Degaspregos is a personal language and was written by Tom Wier.

Dekavurian was crafted by Geoff Eddy. It is a fictional language.

DEL was designed by NA.

Delason is the fictional language of the fictional Mediterranean country of Salamon. Delason's phonology is "a regularized marriage of Spanish and Modern Hebrew." Its vocabulary is drawn from 20 natural languages; unfortunately, etymologies aren't listed on the site. The language has its own script, visible using Internet Explorer or Netscape version 4.0 or later browsers, if dynamic fonts are enabled (otherwise the text will simply appear twice).

Delendian, a fictional language, was created by John Shilpetski IV.

Dementian was developed by Jeremy Boyd as a fictional language.

Demonic/Alorian is a diachronic language. It was invented by Kevin Urbanczyk.

Denden is a fictional-world lingua franca used on the northern continent of Andal, with real-world inspiration drawn from French, Classical Chinese, Classical Tibetan and Nepali. The site features a grammar and sample texts. Denden has a vocabulary of over 1800 words.

Denisian is an artlang and was written by Eric Anger. The web page is in English/Denisian.

Den'Ksie was crafted by Marie Winger. It is a fictional language.

Dermensin, a fictional diachronic language, was designed by Eugenio M. Vigo.

Derrae was created by Jotomicron as a personal language.

Desa Chat was developed by Peter Davis.

Descubralía is a fictional language. It was invented by Dazi. The web page is in English|Spanish.

Detbap is for Uteged and was written by Andre Steffens.

The second language of the Elves, Men, Dwarves and Halflings of the land of Câlnima ("Land"), Deviasew has a Latinate grammar, with a vocabulary derived from Hebrew, English, French and Spanish. The name Deviasew itself is the plural of Devia (from Hebrew devar, "word").

Deymual was crafted by Jonathan North Washington. It is the language of the Elves of Câlnima.

Dha-Patu is completely analytical; it has only two parts of speech, radicals and particles; it has sets of particles that form noun and verb phrases, classify the nouns and define the functions of the verbs; it has an artificial core vocabulary, expanded by loans from natural languages (mainly Greek and Latin). The grammar was conceived entirely on a priori logical principles, and the core vocabulary was generated by random combinations of the given letters. The site features a dictionary of over 1,250 words, a grammar and sample texts.

This small language was invented for AmberMUSH, a MUD, to be the language of Chaosian demons (Dhemonh'ka means "demon language"). The orthography, pronunciation and vocabulary of Dhemonh'ka was inspired by Klingon.

Di'aleka, a personal language, was designed by Tristan Parker.

Diallic was created by Blake Adams as a fictional language.

Diarenye is a fictional language. It was developed by Aaron Morse.

Digor is a personal language and was invented by Nicola Curat. The web page is in French.

DiLingo is a profound English slang with an ever growing vocabulary.

Dingwâ was written by David. It is a personal language.

Dinosaur Language is a professional fictional language.

Diom, a fictional language, was designed by David Stokes.

Diudisk was created by Raginvard Flut as a diachronic language. The web page is in English, French, Esperanto, Spanish, Catalan and Diudish.

Divine Language is a fictional language. It was developed by Luc Besson.

D'ni is the language of the computer game Riven (sequel to Myst). Also see the RivenGuild site.

Doraya is the language of an imaginary world consisting of the regions of Mofeva, Doryn and Rooken. The most fascinating part of the language is the relative roles of nouns and verbs. Verbs are invariable, while nouns take special modifiers to indicate tense. The subject typically is modified for tense, and the direct object may be modified for tense as well. A sample sentence: so silidae e silinae sorn, 'until future-you and future-me are together', "Until I see you again."

Doriathrin is an artlang and was invented by J.R.R. Tolkien.

Dosian was written by Steve Nickolas (Dosius/Usotsuki). It is an IAL.

Double Dutch, a personal language, was crafted by Unknown.

Dozhu:n was designed by Apollo Hogan as a fictional language.

Draconian is a fictional language.

Draconic is a professional fictional language. It was developed by Sean K. Reynolds & Owen K.C. Stephens.

Draconic is a fictional diachronic language and was invented by Bryant.

Draconic (Lovarin) was written by Ikkakujyu. It is a fictional language.

Draqa, a personal language, was crafted by Ajin Kwai.

Draseléq was designed by Pablo Flores as the language of a fictional parallel Earth.

Dren is a logical language. It was created by Thomas McInturf.

Drhaqa was developed by Ajin Kwai.

Drow is a fictional language and was invented by A. Michelle Simmons.

Dublex is a langmaking game -- think of it as Scrabble for people who like to invent words. Rather than the letter tiles of Scrabble, Dublex has 400 word tiles. You combine the word tiles in as many ways as desired to come up with new words.

Duirún was written by Arne Duering. It is a stealth language. The web page is in Duirún.

Dundein Vega, a fictional language, was crafted by Gustavo Salvini.

Dunia is unique in the scope of its vocabulary, with different parts of speech typically drawn from a single language. Most verbs are from Spanish, most common nouns are from English, most scientific nouns are from Latin, most adjectives are from Hindi/Urdu, most simple adverbs are from Russian, and so forth.

Dunnek was designed by Terrence Donnelly as for the Dun people, who inhabit much of Western and Central Europe on Zyem, an alternate Earth.

Dununmi is a fictional language. It was created by Yiuel.

Durdekors is a fictional language and was developed by Jeffrey Henning.

Dutton Speedwords was invented by 1943 by Reginald J.G. Dutton. It is an international auxiliary language.

Dwarfin is a fictional language.

Dwarven Pidgin, a professional fictional language, was crafted by Sean K. Reynolds.

E Dashul was designed by Anthony Raymond Bullard as a diachronic language.

ê Èëe is a personal language. It was created by Jonathana Tegire and Jaaaaaa.

e2 is an international language and was developed by Sindelka.

Eaiea uses groups of notes to form words. Unlike Solresol, this language uses all twelve notes of the musical chromatic scale.

Earth Language was invented by Yoshiko F. McFarland. It is an auxiliary language.

A cousin to Watakassí, Eastern is phonetically far more complex, with more phonemes and more complex syllables. It also has less agglutination, and more isolation and fusion, using auxillary verbs to replace several inflections of Watakassí and its ancestor, and using prepositions to replace some of the cases.

Eastron, a fictional language, was written by Jonathan R Parsons.

Ebisédian was crafted by H. S. Teoh as a fictional language.

Ebubo is a philosophical language. It was designed by Andrew Nowicki.

Ecriture Universelle is a script language and was created by Jean Effel.

EDA was developed by Arne Arotnow. It is an auxlang. The web page is in English and German.

Êdhchirriad, an artlang, was invented by Tom Killingbeck.

Egaeic was written by Edward Field as a personal language.

Egren is a fictional diachronic language. It was crafted by Tuomo Sipola.

Not much about ehmay ghee chah is available online, but a $17 book is available.

Ehxduxadiikootu is a personal language and was designed by Various.

Unlike other of Herman Miller's languages, Eklektu 96 is not a language of furry aliens, but instead has a vocabulary containing an eclectic mix of the world's languages, though the emphasis to date has been on European languages.

Ekspreso was created by Jay Bowks. It is an IAL. The web page is in Ekspreso, English, Spanish, German.

Elatoi, a diachronic language, was developed by John Whatmough.

Elephant's Memory was invented by Timothy Ingen Housz as a fictional language.

Elet Anta is the language of the Anta, a hidden subculture that has lived in the British Isles for at least 1,000 years. It was written by John Fisher.

Elkarîl is an artlang and was crafted by Mark Rosenfelder.

Ellandh was designed by Jedrzej Gren. It is a fictional language.

Elleya, a personal language, was created by Niels van der Plas. The web page is in English, Dutch.

Eloi was developed by John Logan as a professional fictional language.

Eloram is a fictional language. It was invented by Daniel Myers.

Eloshtan is a fictional language and was written by Josh Roth.

Elven was crafted by Sean K. Reynolds. It is a professional fictional language.

Elvish, a fictional diachronic language, was designed by J.R.R. Tolkien in 1915.

Emterz was created by Edgar c. as a diachronic language.

Entish is a fictional language. It was developed by J.R.R. Tolkien by 1945.

Epiq is a personal language and was invented by David J. Peterson.

E-Prime was written by David Bourland. It is a loglang.

Eretas, a fictional language, was crafted by Keith Gaughan.

Erog was designed by Matt Arriola as a personal language. The web page is in English rv:1.7.5) Gecko/20041107 Firefox/1.0.

This is just a sketch of the language, but it is promising: Erone has an attractive lexicon, and I look forward to more to come.

Esata is a personal language. It was created by Pafu.

Esei was developed by Tuomo Sipola.

Eseshté-basó is an artlang and was invented by AK Brady. The web page is in American English.

Esiterato was written by Sandor Csak. It is a personal language.

Eskimo, a fictional language, was crafted by Phil James.

Espanzë was designed by Jonathan North Washington as the language of the Espans, a European race in 3200 C.E.

Esperando is an international auxiliary language. It was created by Jay Bowks. The web page is in Spanish|English.

Esperanto is the most successful constructed language ever, with perhaps a million speakers in the world (estimates vary from 100,000 to 15 million), concentrated in Europe but also with pockets of speakers in Japan and China. Esperanto has more books, periodicals and radio broadcasts using it than any other auxiliary language. It is a classic and required study for anyone serious about constructed languages. It has spawned more offspring than any other constructed language, with many reform projects, the most prominent of which is Ido.

Esperanto de DLT is an international language and was developed by P. M. Witkam.

Esperanto sen Fleksio was invented by Rick Harrison. It is an auxiliary language.

Esreverian, a fictional naming language, was written by Dtsdesign.

Essential World English was crafted by Lancelot Hogben as an auxlang.

Etrer'aous is a personal language. It was designed by Drew Fischer.

The secret organization Eternia has created the international language, Etwu, an extremely regularized language based on French and English.

Eurana is for Euristan and was created by Muhammad Selim. The web page is in German.

Euransi was developed by Libor Sztemon.

EuroEnglish is an IAL.

Hunt designed Eurolang to be the language of the European Union, and he had some aggressive goals for ease of learning (ability to learn in a weekend). Unlike Esperanto, Eurolang has more freely borrowed words from English.

About the only thing interesting about Eurolengo is that the author claims the primary sources of vocabulary are English and Spanish. Otherwise it is just another Euroclone.

Europan is an international auxiliary language.

The author writes, "Just as Latin was replaced first by Vulgar Latin and then by Italian, Anglo-American English will give way first to international English and then to Europanto, the difference being that this process will take place far more quickly.. although it is not a language as such, Europanto does exist. But it is, as yet, rather amorphous and any attempt to try and describe the language and write down its grammatical rules would be rather like planting a seed and wanting to take a photograph of the tree."

Europeano was crafted by Jay Bowks. It is an international language. The web page is in English|Spanish|French.

Eurún, a philosophical language, was designed by Arne Duering. The web page is in Eurún English German 5.1; .NET CLR 1.1.4322).

Eyahwánsi was created by René Uittenbogaard as a fictional language.

Fampónd is the language of vampires. It was developed by Christopher Wright.

Farlingo is an auxiliary language and was invented by Vladimir Farber & Matvei Farber. The web page is in Russian.

Fasile was written by B. Egon Breitenbach. It is an auxlang. The web page is in English|Español|Português|Français|Esperanto.

Fegiartische, a fictional language, was crafted by John. The web page is in German.

Feianovedo was designed by Sander Dieleman as a personal language.

Ferengi is another language that Timothy Miller has invented for a Star Trek race of aliens (the other is Cardassian). Perhaps Miller hopes to become the next Marc Okrand (inventor of Klingon, and the only language modeler to be making much money from his invention). Miller has detailed the grammar and lexicon of Ferengi, as well as the alphabet.

Fergiartisch is the language of the Fergiartu continent. It was created by Johannes Hufnagel.

Ferismonlaren is a fictional language.

Finglish is a stealth language.

Finnstek is for the Fince, a clan from the planet Pii and was written by N. Gruscha|et al.

Fith was crafted by Jeffrey Henning. It is the language of aliens of the planet Fithia.

Fjinnjikulla, a logical language, was designed by Tommaso Donnarumma.

Flestrin was created by Maurizio Rovatti as a fictional diachronic language.

Florish is a fictional language. It was developed by Kata Valinta.

Folkiske is a personal language and was invented by Quentin Read.

Folkspraak is an international auxiliary language intended as a pan-Germanic language, easily learned by speakers of English, German, Dutch, Norwegian, Swedish, Danish, Afrikaans, Frisian and other Germanic languages. Folkspraak is an attempt to distill the Germanic languages. (See Tutonish.)

Folksstem was written by Aaron Chapman.

Fonymfin was crafted by Simon Mulder. It is a fictional language. The web page is in Dutch.

Forendar, a diachronic language, was designed by David Bell.

Fortunatian was created by Marcus Miles as the language of Y nomn de xnenat, tsrat bone naux!.

Frater is a Euroclone from Asia, with a Classical (Greek and Latin) vocabulary, but with the roots somewhat modified to better suit the palate of Chinese, Japanese and other Asian-language speakers. To make it easier for Asian speakers, the language has only five vowels and thirteen consonants (bdfgjklmnprst) but permits more consonant clusters than might be expected given Chinese and Japanese phonotactics.

Frater 2 is an IAL. It was developed by Paul Bartlett.

Frionske is an international auxiliary language and was invented by Stefan Lubbersen.

Fukhian was written by Henrik Theiling. It is a personal language.

Fungarr, a fictional language, was crafted by Obar Norrseg.

Furbish was designed by Dave Hampton as for the Furby electronic pets.

Futurese is a fictional language. It was created by Justin B Rye.

Gaciça is a fictional language and was developed by Ted Kloba.

Gaelish was invented by John Whatmough. It is an artlang.

Gälðyr, a personal language, was written by Luca Galdiolo.

G'amah was crafted by Pablo Flores as a fictional language.

Ganh is the language of the Ganh people. It was designed by mr professor13.

gá'rDëMy is a professional fictional language and was created by Geert Rinkel. The web page is in html.

Gargish was developed by Herman Miller; et al. It is the language of the Gargoyle race of the Ultima game series.

Gelveasar, a fictional diachronic language, was invented by Jon Brase.

Geoglot was written by 1916 by Timothy J. Donoghue as an international language.

Gevey is for the continent of Ewlah on the planet Kallieda. It was crafted by Rik Roots.

Giak is the language of the evil Giaks in the world of the Lone Wolf books and was designed by Joe.

Gilish was created by Jordan Lavender. It is a fictional language.

Gilo, an auxiliary language, was developed by Alan Giles.

Gladilatian lacks verbs, with every sentence being a copula, and each conjunction consists of one word before the last conjunct and another before each of the other conjuncts. Syntax is strict. Vocabulary is a priori. The site has a dictionary of 300 words, a grammar, sample texts and a unique script.

Glaugnea was invented by Michael Helsem as a philosophical language.

Gleeb was written by NA.

Glide is a fictional language. It was crafted by Slattery, O'Neil.

Globish is an auxlang and was designed by Jean-Paul Nerrière. The web page is in French.

Globish was created by Madhukar Gogate. It is an IAL.

Hogben published a draft form of the language, which he called Interglossa, in 1943, with Ashby and Clark preparing a modified version, called Glosa, in 1981. The language is generally criticized by constructed language enthusiasts, because it has basically not specified a grammar, relying instead upon English grammar. The vocabulary is Classical (Greek and Latin) and contains about a thousand words.

Goblin was developed by Didier Willis.

Goesk, a personal language, was invented by James S. Grossmann.

Golal Natkali was written by Betsumei as a fictional language.

With no canonical Vulcan to rival Klingon (and with Gene Roddenberry never developing much more than the naming conventions and a few words), Star Trek fans have been creating their own versions of the language: Marketa Zvelebil's Modern Standard Vulcan, Mark R. Gardner's Golic Vulcan and Joel Anderson's Vulcan.

Gomain is a diachronic language. It was crafted by Zack Hart.

Góquim is a personal language and was designed by Nikhil Sinha.

Alas, no Eastern Germanic language survives in our world, but Perrotin has created an alternate history where Wulfilan Gothic survives. Gutisk, as its speakers call it, is grammatically simpler than its ancestor, if yet richer in inflexions than modern European languages. The site has sample texts, a reference grammar and rich graphics.

Graatska was created by Richard Valler (MDR). It is an international auxiliary language.

Graod, a fictional naming language, was developed by Dtsdesign.

Grooiman was invented by William James Tychonievich as a fictional language.

gua!spi is a loglang. It was written by Jim Carter.

Guask is a fictional language.

Gutisk is an artlang and was designed by Damien Erwan Perrotin.

Gweydr was created by David J. Peterson. It is a personal language.

gzb, a personal language, was developed by Jim Henry.

Hadwan was invented by Muke Tever as the language of the monsters of Southern Europe.

Hallon is a personal language. It was written by Paul V. S. Townsend, M.Sc.

Hallowese is a fictional language and was crafted by Robert L. Vaessen.

Hambhukringki was designed by Russian. It is for the planet Gliipskandhu in the NGC0888 Galaxy.

Hamdi, a fictional language, was created by K La Touche.

Hänäthlîêr was developed by Shane Hampton as a personal language.

Detailed in C.J. Cherryh's "Chanur" series, Hani has a phonology fit for lions and inspired by the sounds the author's cats made.

han-taj-tUl-hUt is a personal language. It was invented by Aaron Ruimy.

Hapoish is the language of the planet Hapoish in Lehola's Refea Solar System and was written by James E. F. Landau. The web page is in French.

Harry Potter Magic Language was crafted by J. K. Rowling. It is a professional fictional language.

Hattic, a fictional diachronic language, was designed by Jan van Steenbergen.

Heratï was created by Zingjar ë Gud as a personal language.

Hieroglyfic is a iconic language. It was developed by Rowland Jones in 1768.

High Speech is a naming language and was invented by Stephen King.

Huttese is a fictional language.

Hyilté was crafted by Robin Morton. It is a fictional language.

Hystudian, a diachronic language, was designed by Daniel Jewell.

iaPil was created by Peter Mark Garza.

Ibran was developed by Muke Tever as an artlang.

Idjana is a personal language. It was invented by Quentin Read.

With a name meaning "derived from" in Esperanto, Ido is a modification of Esperanto.

Drawing from Navajo, Chinese, Xhosa and Finish, Idrani is a personal language used by the author and his two sons.

Ii42hah32reh12man41 is a fictional language and was written by Jonathana Tegire and Jaaaaaa.

Iju Puna was crafted by Kevin Goodman. It is a personal language.

Iksto, a stealth language, was designed by Keith Mitchell.

Ilaini was created by Irina Rempt as the language of the kingdom of Valdyas.

Ilathid'hi is a fictional language. It was developed by Scott 'Blade' Hamilton.

Ilianóre is for the Scealdings and was invented by Jeff Smith.

Ilish is the language family of the il, a species of sentient sea creatures of Fithia (see Fith), which communicate by sending electrical shocks to one another. Ilish is unusual in that it has no nouns, but instead uses thousands of pronouns.

Iljanore was written by Jeff Smith. It is a fictional diachronic language.

Ilkorin, a professional fictional language, was crafted by J.R.R. Tolkien in 1917.

Illfillin was designed by Uskokovic Vuk as a fictional language.

Iltârer is the language of the Iltâr. It was created by Tom Little (Sêsâmân).

Ilythirri Alurl is a fictional language and was developed by Jashan A'al.

Imuttan was invented by Kári Emil Helgason. It is a diachronic language.

Inagalasi, a fictional language, was written by civman2000.

Inda is ergative and features an interesting grammar, with adjectives treated as verbs (as in Japanese). The pronunciation system is also interesting, with consonants undergoing assimilation in different positions. Higley plans to provide more background about the fictional Indarans and their culture, and of course how that has affected their language.

Indika was crafted by Nikhil Sinha as a personal language.

Indo-Nugimian is a personal language. It was designed by Tony Le.

Ini is a fictional language and was created by Nicole Perrin.

inif Xeuivteles was developed by B. Morgan White. It is the language of Opmeáh rato inifok solteeyok. The web page is in English and German.

Inklišche, an international language, was invented by Stefan Lubbersen.

Ïnlici was written by ACZ as an artlang.

Inrilan is an auxiliary language. It was crafted by The Inrilan Consortium. The web page is in English, French, Esperanto (others coming soon).

Intal is an auxlang and was designed by Erich Weferling.

Inter Celtic was created by Makeenan. It is a fictional language.

Inter-esperanto, an IAL, was developed by Greg Hoover, Initiator.

Intergermansk was invented by Pascal A. Kramm as an international auxiliary language. The web page is in English rv:1.7.5) Gecko/20041108 Firefox/1.0.

Hogben published a draft form of the language, which he called Interglossa, in 1943. It survives today as Glosa.

InterLang is an international language. It was written by Douglas Green, Kristian Jarventaus, Kevin Albrecht.

Developed by an organization that was originally founded in New York in 1924 to choose one constructed language to support as an auxiliary, the International Auxiliary Language Association eventually created its own language, with a grammar derived from the Romance languages and a vocabulary drawn from western European languages. Not to be confused with Latino Sine Flexione, which was later called Interlingua. (Before IALA/Interlingua, the Academia pro Interlingua had a language with the same name; they later gave Gode permission to use the name after the IALA had informally adopted it.)

Interlingue is an auxiliary language.

Intermythic English is a superset language and was designed by Jeffrey Henning.

International Sign Language (ISL) was created in 1950 by World Congress of the World Federation of the Deaf. It is an auxlang.

Intero, an IAL, was developed by Marq Thompson and Jon.

Ïpetas was invented by Tuomo Sipola as a fictional diachronic language.

Iqalu is a personal language. It was written by Zach McVaY.

Irecepte is a personal language and was crafted by Eric Remington.

Isirian was designed by Joshua Horn. It is a personal language.

Islandian, a fictional language, was created by Austin Tappan Wright in 1893.

Islet was developed by Daniel Myers as a fictional language.

Islic Wood Elvish is a fictional language. It was invented by Curtis Mullings.

A sister language of Verdurian, Ismain is derived in a regular process (with historically plausible quirks) from Cadhinor, complete with borrowings from Verdurian and Kebreni. Besides a grammar and sample texts, a 1500-word lexicon, with etymologies, is available.

Isotype is a philosophical language and was written by Otto Neurath in 1936.

it-Cejdijtung, Ctung was crafted by Anthony Lawless, Evan Gallagher, Jan Havliš, Jim Morgan. It is a personal language.

Ithkuil, a philosophical language, was designed by John Quijada.

Itlani was created by James E. Hopkins as a diachronic language.

J'ækatá is a fictional language. It was developed by Sean Bradt.

Jakelimotu is a personal language and was invented by Lane Schwartz; Ben Rogers.

Jamalinaşķ was written by Jamal Abed-Rabbo. It is a personal language.

Jameld has over 4,000 words, derived from German, French, Dutch, Frisian and Esperanto. The author sums it up best, "Jameld is a constructed language, with an organic heart and an imaginary history. It is smooth and chocolatey on the outside, with a lovely fluffy centre, and it won't fill you up. Oh, and it looks like this: Te missa eri jist eskrïri int Jameld. Oquo na possmä zë vorvor ohn t'Internet!" Campbell has published Jameld translations in Zolid Matters, his e-journal.

Japanglish, a personal language, was crafted by Josh "Jae" Munce.

Jasminese was designed by Victor Medrano as a fictional language.

Jaueqao myys is an artlang. It was created by Zak Keene.

Javifo is a fictional language.

Jechoire is a fictional language and was invented by Rubén Ortega. The web page is in Catalan.

Jelbazech was written by Deiniol Jones. It is a fictional language.

Jezik Slovianaja, an international auxiliary language, was crafted by Pawel Ciupak. The web page is in Polish.

Jigwa was designed by Rick Harrison; et al as an international language.

Jirit is the language of the Mizarian mice people. Only about 22 words of vocabulary are listed here, but the language is interesting for its agglutinative morphology, which makes its grammar very straightforward.

Jleer is a personal language.

Jovian is a fictional diachronic language. It was developed by Christian Thalmann.

Jylsk is a fictional language and was invented by Alex Middleton.

Jynmû was written by Justin Spahr-Summers. It is a personal language.

Kæseran, a fictional language, was crafted by Alex Alfaro.

Kagizerin was designed by Nik Taylor as for the Kiz Empire.

Kakarak was created by Kaurpin.

Kalaba-X is nothing more than a formalized grammatical description [verb (modifier) object (modifier) subject (modifier)], yet Pike makes excellent use of it to teach some of the challenges of translation, as he translates material to and from Kalaba-X. This is a must-read for anyone designing the grammar of a constructed language; this article is one of a series of four articles posted at this site (I, II, III, IV).

Kaldon is a fictional language. It was developed by Warmaster.

Kali-sise is an auxiliary language and was invented by Jeffrey Henning.

Kaliso was written by Jashan. It is a fictional language.

Kalonese, a fictional language, was crafted by David J.S. Boyle.

Kamakawi was designed by David J. Peterson as a personal language.

Kankonian offers one of the larger lexicons on the Web, with a dictionary of over 5,500 words. This extraterrestrial language is vaguely reminescent of the tongues of the Middle East, but it is based directly on no human language, with the vocabulary designed according to the author's sense of the most natural set of sounds for each idea.

Kansu is a fictional language. It was created by Dan Morrison.

Kar Marinam is a fictional language and was developed by Josh Roth.

Kardasi was invented by Esther Schrager. It is a diachronic language.

Kardasi, a fictional language, was written by Timothy Miller.

Kardii was crafted by Jayelinda Suridge as a fictional language.

Karis is a fictional language. It was designed by Maknas.

Karklak is an artlang and was created by Jeffrey Henning.

Kash was developed by Roger Mills. It is a fictional language.

Kattoelai, a fictional language, was invented by J.T. Antley.

Kaupelanese was written by Paulo Eduardo França Padilha as the language of the Austronesian kingdom of Kaupelan.

Kebreni is the language of Kebri, which is near Verduria on the planet of Almea. Its grammar is designed to differ from that of English in nearly every way possible: for instance, the verbal system depends on categories like aspect, politeness, desire, and volitional impact, and not at all on person, number, or tense, and conjugation depends on metathesis and vowel change rather than inflection. Kebreni's ancestor language Methaiun is worked out as well, and Kebreni derives from it in a historically plausible way. The site lists a 1400-word dictionary with etymologies, a grammar and sample texts.

Kel is a logical language. It was crafted by Robert Jung.

Kélen is the language of aliens and was designed by Sylvia Sotomayor.

Kelenala was created by David J. Peterson. It is a personal language.

Kemilas, a fictional language, was developed by Robert L. Brown III.

Kerno was invented by Padraic Brown as a fictional diachronic language.

Kesh is a professional fictional language. It was written by Ursula K. Le Guin.

Khangaþyagon is for the Wizards of Huna and was crafted by Pete Bleackley.

Khikeng was designed by Apollo Hogan. It is a diachronic language.

Khundruzn, a fictional language, was created by Nicole Perrin.

Khurwich is a fictional language.

Khuzdul was invented in 1940 by J.R.R. Tolkien as a professional fictional language.

Khuzdul, Neo- is a professional fictional language. It was written by J.R.R. Tolkien, David Salo.

Kiadin is a fictional language and was crafted by DarkHorizon.

Popular science-fiction author C.J. Cherryh sketched out Kiffish for the "bad guys" in her "Chanur" series. With her permission, linguist Spence Hill added details to the language, based on her documentation of the anatomy and culture of the Kiff themselves. Besides being ergative, Kiffish is a synthetic language, rather than an agglutinative or order-bound language.

Kika Olelo was designed by Eclipse/Turquoise. It is a fictional language.

Kimva, an artlang, was created by Pete Bleackley.

kimwa lilyeho was developed by Alex Fink as a fictional diachronic language.

Kine is a personal language. It was invented by Daniel Myers.

Kinfa is a diachronic language and was written by Sven Lotz.

Kingfa was crafted by Apollo Hogan. It is an artlang.

Kingifa, a fictional diachronic language, was designed by Pete Bleackley.

Kingiwa 'Awiwasa was created by Alex Fink as a diachronic language.

Kìn-Sang is a fictional language. It was developed by Kári Emil Helgason.

Kinsi Rorotan is an artlang and was invented by Robert Wilson.

Kinya was written by Maurizio Gavioli. It is a fictional language.

Kioshu, a fictional language, was crafted by Jeff Goguen.

Kir was designed by Jashan A'al as a fictional language.

Kirda-han is a personal language. It was created by Shane Hampton.

Wolf created Kiromi for the amusement of himself and his friends and as an enjoyable way of learning more about linguistics. It has the most informal definitions I have encountered in a constructed language, with words such as batra (defined as "drums, poundable instruments of rhythm") and bejke (defined as "belch, burp, suddenly emit").

Kirumb is a fictional diachronic language and was developed by Muke Tever.

Klaatu's Language was invented by 1951 by Edmund H. North. It is a professional fictional language.

The most popular fictional language today, with more speakers and more enthusiasts than even Tolkien's Quenya. Okrand invented the Klingon language for Star Trek, and there are many commercial products available to help with learning the language, including a dictionary, audiotapes and a multimedia software tutor.

Klingonaase, a professional fictional language, was written by John M. Ford.

Knarwaz was crafted by Pablo Flores as the language of a fictional parallel Earth.

KNSL is a personal language. It was designed by David J. Peterson.

Ko e Vagahau he Motu is a personal language and was created by Philip Newton.

Kobaïan was developed by Christian Vander. It is a professional fictional language. The web page is in English|French.

KOD, an auxlang, was invented by Johann Vielberth. The web page is in German, English, Spanish, French.

Kokipopi was written by Eric Sleator McGill as an IAL.

kolaqadock is a fictional naming language. It was crafted by martin.

Kon'ya is an international auxiliary language and was designed by Larry Sulky.

Many constructed languages are so large in scope they will never be finished. Kordron (Late Orcish), on the other hand, was created simply as a naming language, to be used to name orcs (goblins) in a campaign in a fantasy role-playing game.

Kor'ekhani was created by J. Matthew Saunders. It is a diachronic language.

Korpesk, a fictional language, was developed by Shawn C. Knight.

Kosi was invented by Robert Jung as a fictional language.

Kosmal Idioma is an international language. It was written by José Guardiola in 1893.

Kot is a fictional language and was crafted by Bucchianeri Marco.

Kótèsä was designed by Justin Spahr-Summers. It is a personal language.

Kramxelian, a fictional naming language, was created by Dtsdesign.

Kriegsprach is the language of a fictional Germanic race featured in the war game Donnerkrieg.

Krithnag was developed by Alex Middleton as a personal language.

Kronokayjin is an artlang. It was invented by Tyler Hogan.

Kugzogak is a fictional language and was written by Tom Killingbeck.

Kupo is a fictional language.

Kushan was designed by Rob H. It is a personal language.

Kusthü is the language of the world of Endra.

Kvaaplaang, a personal language, was developed by Tom Curtis.

Kwaadakw was invented by Victor Medrano as a fictional language.

Kwendyngu is a fictional language. It was written by Ceisiwr Serith.

Kya'terrian is a fictional naming language and was crafted by Dtsdesign.

Kyran was designed by Kian. It is for the alternate Earth known as Taris.

Kzinti, a professional fictional language, was created by Roger Kuiper (and Man-Kzin Wars authors).

L17 was developed by Victor Medrano as a fictional language.

Elgin, noted author of The Gentle Art Of Verbal Self Defence series of books, created LáAdan as an experiment to test the Sapir-Whorf hypothesis. Specifically, she felt that English and most natural languages were better suited for expressing the views of men than women. She designed LáAdan to enable women to better give voice to their viewpoints, and the lexicon of LáAdan, more than any other constructed language, has many unique concepts that are expressed in LáAdan in one word but cannot be easily expressed in natural languages. Elgin included LáAdan in her Native Tongue science-fiction trilogy. Unfortunately, little of the language has been documented on the Internet.

Lacue is a personal language. It was invented by Eirik Olsen.

Ladekwa is a loglang and was written by Rick Morneau.

Lahabic was crafted by Marcus Miles. It is a fictional language.

Laikath is a fictional language.

Lakal/Saradic, a fictional language, was created by Certic.

Lalortel was developed by 1959 by Robert N. Yetter as an auxiliary language.

Language of Center is a fictional language. It was invented by Robert A. Heinlein.

Langue Nouvelle is an auxlang and was written by Faiguet in 1765.

Langue Universelle was crafted in 1855 by C. Letellier. It is a philosophical language.

LANGUST, an IAL, was designed by Grigoriy Korolev. The web page is in English|Russian.

Lannu den gental was created by Morris.

Lano was developed by M. Martin as a philosophical language.

Lanrohidh'il is a fictional language. It was invented by Alison Fisher.

Richard Adams' Watership Down is one of the classic works of xenofiction, placed as it is among and between the warrens of rabbits in the English countryside. Lapine, the language he sketches for his rabbits, is arguably the best naming language ever created, and is a minimalist virtuoso performance, a haiku of a language compared to the sonnet of Sindarin. It's amazing how much can be accomplished with how little. Lapine went a long way towards establishing the verisimilitude of the rabbits' culture and in the process making Watership Down a bestseller.

Lara is an international auxiliary language and was written by Alessandro Pedicelli. The web page is in Italian.

Larenti Tergush was crafted by Tiogshi Laj. It is a fictional language.

Larua, a fictional diachronic language, was designed by Darrell Manrique.

Lashkos was created by Christopher Wright.

Latalmish was developed by Ian Burleson as an international language.

Late Réziko is a fictional language. It was invented by J.T. Antley.

Latineo is an auxiliary language and was written by Jay Bowks. The web page is in Latineo.

Latino Moderne is based on IALA Interlingua. The vocabulary for LM is the same as that of Interlingua, but Stark has rejected Interlingua's grammar, which he views as oversimplified and hard to use in practice, especially in regards to pronouns. The grammar of LM is instead a distillation of that of ancient Latin and the modern Romance languages. Learning Latino Moderne can serve as a good foundation for later study of Classical Latin or a modern Romance language.

Peano felt that - while the Latin vocabulary is known to many people through its descendant languages and scientific borrowings - its inflexional system and syntax were too complex. By stripping Latin of its "ponderous burden of inflexions", Peano hoped to design the ideal auxiliary language. Latino Sine Flexione's vocabulary consists of all Latin words (including Latin borrowings of Greek terms) and the growing collection of common "international" words. Peano originally called the language Latino sine Flexione ("Latin without inflections") then changed the name to Interlingua. Since the IALA's Interlingua is now more well known, Peano's language is usually referred to by its original name.

Latinvlo was crafted by Stephen Houghton / Paul Bartlett. It is an auxlang.

Latötsc, a personal language, was designed by Brian Suchsland-Gutiérrez.

Laval was created by M. Martin as a fictional language.

Laxonomasoljomijodo is a personal language. It was developed by Quentin Read.

Leibniz's Characteristica Universalis is a philosophical language and was invented by G.W. Leibniz circa 1677.

Lemurian was written by Sander Dieleman. It is a personal language.

Lengua Universal, a philosophical language, was crafted by Bonifacio Sotos Ochando in 1851.

Lengua Universal was designed in 1888 by L. Selbor as a philosophical language.

Lepidopteran (Ze) is a fictional language. It was created by Dazi. The web page is in English/Spanish/Ze.

Lesdekan is a fictional language and was developed by David Johnson (Sonib).

Lesko was invented by Shawn C. Knight. It is the language of aliens known as Lesu.

Leturian, the language of Leturia, was written by Patrick Pfeaster.

Ley Arah was crafted by Jashan A'al as for the Tsara, the warrior-sect of the Tsendashai.

Li' Anyerra-Tarah is a fictional language. It was designed by Wesley Parish.

Liaden is a professional fictional language and was created by Sharon Lee, Steve Miller.

Life Sound was developed by mikulzqm. It is a logical language.

Lijou is a personal language.

Lilipu, a personal language, was written by Victor Medrano.

Limciela was crafted by Jim Taylor as a fictional language.

Lin incorporates nine-fold polysemy ("enneasemy") in its lexicon, where vocabulary is disambiguated through inter-word morphology. This, and the use of single- and double-letter words for the most commonly used concepts, makes Lin spatially compact.

LINC is a . It was designed by Igor Garshin.

Lincos was created by Dr. Hans Freudenthal.

Linear A/Minoan is an IAL and was developed by Edward Hatfield. The web page is in English/Greek.

Lingo was invented by NA.

Lingua Franca Nova was written by Dr. C. George Boeree. It is an international auxiliary language. The web page is in Lingua Franca Nova, English, Spanish, Portuguese, French, German, Italian, Dutch, Norwegian, Danish, Italian, Russian.

Dating back to the 1100s, Lingua Ignota ("Unknown Language") is considered to be the first constructed language ever invented (or the first that we have record of).

Lingualumina, a philosophical language, was crafted by Frederick William Dyer in 1875.

Liniyai-Karmisa was designed by Eric Anger as a fictional language.

Linka Romànika is a personal language. It was created by Dana Hadar.

Liñxî is an international language and was developed by Andrew J. Meilstrup.

Liotan was invented by Geoff Eddy. It is a diachronic language.

Lips Kith, an auxiliary language, was written by Scarisbrick, Joseph in 1919.

Lipu'onai was crafted by Amanda Smith as a personal language.

Liva is a loglang. It was designed by Claudio Gnoli.

Livagian is a logical language and was created by And Rosta.

Llàtec was developed by Nicola Curat. It is a jargon. The web page is in Catalan.

Llathos, a fictional language, was invented by Pharazon.

Brown designed Loglan (short for "Logical Language") to test the Sapir-Whorf hypothesis through use of a language that followed the concepts and structures of symbolic logic, while striving for a thoroughly unambiguous grammar. Brown's original language has served as the foundation for at least two other logical languages, -gua!spi and Lojban.

Logli was written by Marcos Cramer as a personal language.

Logopandectesion is a philosophical language. It was crafted by Thomas Urquhart circa 1651.

Logsan is a loglang and was designed by Filip Skwarski.

Logulos was created by Shawn C. Knight. It is a logical language.

Designed by others as a continuation of Loglan, Lojban (its name is a contraction for "Logical Language" in Lojban) is the most professional and thought-provoking of the modern logical languages, with a fascinating methodology for deriving its root words from Arabic, Chinese, English, Hindi, Russian and Spanish. Extensive information is available on-line. For the sheer joy of it, you should check out how Tolkien's Tengwar alphabet can provide "a romantic orthography for Lojban".

Lojsk, a loglang, was developed by Ariano Reyes.

Lone was invented by Risto Kupsala as an auxlang.

Long Wer is a fictional language. It was written by Sophia Abraham (Ábrahám Zsófia) aka Mau Rauser.

Loroi Trade is a fictional language and was crafted by Jim Francis.

Low Orkish (of an ilk with Kordron) has but eleven different letters in its alphabet, and the language freely borrows words from other languages (such as English). The language was designed to give the author's MUD personas more flavor, and to annoy the other players.

Lrahran was designed by Adam Walker. It is the language of aliens of the Commonwealth.

Lûá, a fictional language, was created by Fen Yik.

Ludireo was developed by Herman Miller as a fictional language.

Ludycian is an artlang. It was invented by Alex Beaverstone.

Lugasuese is a fictional language and was written by Jurre Lagerwaard.

Luinin was crafted by Boomajoom. It is a fictional diachronic language.

Luni, an IAL, was designed by Florent Garet.

Lusane was created by Luis Sainz Lopez-Negrete as an international auxiliary language.

Lusiaquía is an international language. It was developed by Stefan Lubbersen. The web page is in Dutch.

Mänti is a philosophical language and was invented by Daniel Tammet.

Machi was written by Terrence Donnelly. It is the language of the insectoid race of Epsilon Indi II.

Mærik, a fictional language, was crafted by Benct Philip Jonsson.

Paul Bartlett has been a tireless documenter of past IAL projects and has carefully typed and formatted The Master Language, a language proposal published in 1907. Magistri Linguio (its name translated to its vocabulary) is based on Latin, the long-time IAL of Europe. The language uses a modified Latin vocabulary with English word order in place of the Latin declensional system. Houghton did not actually develop a dictionary, instead specifying how existing Latin words would be transformed to their Magistri Linguio forms. An interesting project for someone would be to actually adapt the Latin lexicon to provide a dictionary for the language.

Maktalu was designed by Nik Taylor as for the Great Valley on the planet Yord.

Malacandrian is a fictional language. It was created by C. S. Lewis in 1938.

Malknarh is a diachronic language and was developed by Maknas. The web page is in English/Malknarh.

Maltae was invented by Kuanye. It is a personal language.

Mamseunsci was written by Andrew McKenzie.

Manaki, a personal language, was crafted by Yann Kiraly.

Manaža was designed by Shane Hodgson as a personal language.

Inspired by Sanskrit, Hindi-Urdu and other Indian languages, Mango is the language of the Tiger people of planet Pii, featured in a personal roleplaying game. Tigers' respect for nature, women and agriculture rules the Mango language. Their disgust for crimes of violence, the Leopard people and their sneering attitude for literacy and studying are also reflected in their language. The lexicon has over 10,000 words.

Mannish is a fictional language. It was created by J.R.R. Tolkien.

Mapalgetian Continental Basic Language is an auxiliary language and was developed by Greg Johnston.

Marata is a fictional language.

Matsui was written by Ray Flores. It is a logical language. The web page is in English rv:1.7.3) Gecko/20040910.

Megdevi, a personal language, was crafted by David J. Peterson.

Meghean was designed by Andreas Johansson as a fictional language.

Meiko is an auxlang. It was created by Florent Garet.

Mekhael is an artlang and was developed by Maknas.

Mekhael was invented by Maknas. It is a fictional diachronic language.

Melani, a diachronic language, was written by Michael Mechmann.

Melindaran was crafted by Randal L. Lanning as a personal language. The web page is in English|Esperanto.

Mellyrn is a personal language. It was designed by Alex Bolton.

Mentolatian is a fictional language and was created by Padraic.

Merahai was developed by Mia Soderquist. It is a fictional language.

Merdian, a personal language, was invented by David Dynes.

Mêriale Nunérim was written by Eugenio M. Vigo as an artlang.

Merian is a naming language. It was crafted by David Kirschner.

Mêriate et Darae is a fictional diachronic language and was designed by Eugenio M. Vigo.

Merilareth was created by Chris Rohan. It is a fictional language.

Mesogeoika, a fictional language, was developed by Alex Katsaros.

Meth was invented by Shawn C. Knight as the language of a fictional race.

Mhigiwipian is a personal language. It was written by Simon Whitechapel.

Microlang 1.0 is a philosophical language and was crafted by James.

Microyak is an IAL.

Midikan was created by Curtis Mullings. It is a fictional language.

Mikiana, the language of Mikiana people,, was developed by Jonathan Bettencourt.

Mineng was invented by tli-ze as an international auxiliary language.

Mingjiese is a fictional language. It was written by YongDeok Cho.

Minhyan is for the planet Peliaz, still spoken by the forest people of the planet and was crafted by Jeffrey Henning.

Minyeva was designed by Garrett Jones. It is a loglang.

Mjuteità Inglisja, a fictional language, was created by Tomas Magath.

Møkobi was developed by Joseph W. Mynhier as a diachronic language.

Molvanian is a professional fictional language. It was invented by Santo Cilauro, Tom Gleisner, Rob Sitch.

Mondlango is an international language and was written by Mr. He Yafu.

Moonshine was crafted by Andrew Leventis. It is a naming language.

Mornaë, a fictional language, was designed by Emily Bisset.

Moten was created by Christophe Grandsire as a fictional language.

Mowhan is the language of the Mowameddo Regime, a Canadian micronation. It was developed by Mowameddo Regime.

Mua is a logical language and was invented by Valentin Koulikov.

MUL was written by Michael Cartier. It is a loglang.

Mundo-Lingue, an auxiliary language, was crafted by Julius Lott.

Musbrek was designed by Jashan A'al as a stealth language.

Mushroomese is a fictional language. It was created by Lee Wilson.

Nabel is an auxlang and was developed by Damon M. Lord.

Nadsat is the language (slang, actually) used by gangs of violent English teenagers in the now-classic book and movie A Clockwork Orange. This English slang serves a serious purpose in the book, which is to help keep the violence of the protagonist (who rapes, murders and steals) from becoming unbearable to the reader. Nadsat is the best slang ever invented, with over 300 words, many of them cleverly derived from Russian (e.g, Russian nadsat, "-teen").

Naffarin was invented by 1905 by J.R.R. Tolkien. It is a personal language.

Nakiltipkaspimak, a fictional language, was written by Daniel Andreasson.

ñakiw pym wifiw kingewhàwwas was crafted by Pete Bleackley as an artlang.

Nalona is a fictional language. It was designed by Douglas Green, Kevin Albrecht, and Kristian Jarventaus.

Nalonin is a fictional diachronic language and was created by Boomajoom.

Nalosya was developed by Kuanye. It is a personal language.

Namarin, a fictional language, was invented by Renli Marek.

Namek was written by Akira Toriyama as a naming language.

Nandorin is a fictional language. It was crafted by J.R.R. Tolkien.

Nanigani is the language of the Asteroid Commonwealth and was designed by Kaihsu Tai. The web page is in Mandarin.

Nanon was created by Matt Scott. It is a fictional language.

Naqu, for the planet Naqu, was developed by Kevin Albrecht.

Naracze was invented by Yoon Ha Lee as a fictional language.

Naranis is a fictional language. It was written by Maknas.

Nari is a fictional language and was crafted by Thomas Slawson.

Narish was designed by Jordan Lavender. It is a fictional language.

Nartrean, a personal language, was created by Edward field.

Nassian was developed by Jan Havlis as the language of the Ossers, a north Slavonic people.

Natu-Khuzdul is a fictional naming language. It was invented by Siewurd S. Wendau. The web page is in russian.

Nedertæl is an IAL and was written by Stefan Lubbersen.

Neelan was crafted by Neil Buckley. It is a fictional language.

Neitetar, a fictional language, was designed by Jashan A'al.

Nemeritvie was created by Luciano Nicolás Parisi as an international auxiliary language. The web page is in Spanish.

Neo is an international language. It was developed by Arturo Alfandari.

Neo-Dalmatian was invented by Ferenc Gyorgy Valoczy.

Neove is a philosophical language and was written by Theodore Carras.

Nesupian was crafted by Dacian. It is an auxiliary language.

Tolkien made some modest contributions to his cousin's language, Nevbosh ("New Nonsense"). Next up: Naffarin.

Nevokanyi, a fictional language, was designed by Nicole Perrin.

New Avaeran is a diachronic language.

New English was developed by Jeffrey Henning, et al as a fictional language.

Newahon is an artlang. It was invented by John Whatmough.

Newspeak is a fictional language and was written by George Orwell.

Ngolopalnec was crafted by John Whatmough. It is a fictional diachronic language.

Nickish is a fictional language.

Nihilosk, a personal language, was created by Nikhil Sinha.

Niline lale was developed by Chris Bates as a fictional language.

Nimyad is a diachronic language. It was invented by Thomas Thurman.

Nirdaen is the language of the land of Vaenthyr and was written by Reinhart Keim.

Njaama was crafted by David J. Peterson. It is a personal language.

Noceltaeh, a fictional language, was designed by Allen Squires.

Nômík Sprøk was created by Connor Becker as a fictional language.

Noraan is a stealth language. It was developed by Noraa J. Suiralc. The web page is in English DigExt).

Nordálien is a fictional language and was invented by Gabe Bloomfield.

Nórdicg was written by Yẃlyan Rott. It is a fictional language.

Nordien, a fictional language, was crafted by Aaron Chapman.

Northern Griffin Script was designed by Zylom as an artlang.

Nova is for the island of Pan and the contiguous nation of Nowapan. It was created by Brad Coon.

Novial (an acronym for New International Auxiliary Language) was designed primarily from two other languages, Ido and Occidental.

Novial 98 is an auxlang and was developed by NOVIAL-L.

Novial Pro was invented by Marcos Franco. It is an IAL.

Nowapan is a fictional language.

Noxilo, an international auxiliary language, was crafted by Mizuta Sentaro. The web page is in Japanese, English, French.

Nóyahtowa was designed by J. S. Burke as a fictional diachronic language.

Nóyanla is a fictional language. It was created by Maknas.

Nu Aves Khara-Ansha is a fictional language and was developed by Wesley Parish. The web page is in Englsih.

Nuatic was invented by Daniel Day. It is a fictional language.

Nuirn, a jargon, was written by Steve Gustafson.

Nunihongo was crafted by Jeffrey Henning as a diachronic language.

Nüreqio is a fictional language. It was designed by Cristián Cuevas.

Nuspic is an international language and was created by Przybylowicz.

õ’ingææ was developed by Alex Fink. It is an artlang.

Obrenje, a fictional language, was invented by Christian Thalmann.

An international language using a Romance vocabulary, intended almost solely for Western speakers. The language is so naturalistic that Don Harlow says, "a linguist unfamiliar with it might be forgiven for assuming it to be a minor Romance dialect that had grown up after the collapse of Rome." Inspired by Mundo-Lingue, Occidental itself served as an inspiration for Novial.

Oda Zginzgala was written by Bradford Morgan White as a fictional language.

ODODU is a logical language. It was crafted by Jere Northrop.

Odonien is the language spoken by the Odonans, an alien race introduced by the author in his Star Trek fan fiction. When creating the language, he intentionally violated as many language universals as possible in order to produce a more alien language. Odonien was designed as an OSV language, and does not use prepositions or postpositions. Instead, it divides all nouns into adjuncts to nouns and verbs, and uses case particles to indicate the relationships. The aim of Odonien is to make sentences as succinct as possible. The language has a unique script, a primer and approximately a thousand words.

Ok was designed by Duke Keenan.

Okaikiar is a fictional language and was created by Mark Reed.

Olaetian was developed by Herman Miller. It is the language of the Kolagian universe.

Old Dwarvish, a professional fictional language, was invented by Clyde Heaton.

Old Kandar was written by Tim Hall as a fictional language.

Old Rashurish is a fictional diachronic language. It was crafted by Ikkakujyu.

Old Sindarin is a diachronic language and was designed by J.R.R. Tolkien.

Old Southern was created by Laurie Gerholz. It is the language of the country of Arvandra.

Old Tongue, a professional fictional language, was developed by Robert Jordan.

O'lelic was invented by Curtis Mullings as for the Akinokans.

Olijad is a personal language. It was written by Robert Hill.

Olvardeth is a personal language and was crafted by Victor Yuri Gevirtz. The web page is in English Gecko/20041125 Firefox/1.0.

Omnesian was designed by Jordan Kay. It is an auxiliary language.

Omnial, an auxlang, was created by Elx Amnial.

Oneirien was developed by Collectif Oneira as the language of the people of the imaginary world Oneira. The web page is in French.

Ongaki is a fictional language. It was invented by ACZ.

Ook! is a miscellaneous language.

Oopee is a fictional language and was crafted by Kelly Kozlowski|Carmen St. Jean.

Oou was designed by Sonja Elen Kisa. It is a fictional language.

Opus-2, a fictional language, was created by Chris Pressey.

Oraq was developed by Mason Fraley as the language of Oraq.

Orcish is a professional fictional language. It was invented by Clyde Heaton.

Oro Mpaa is a fictional language and was written by Christian Thalmann.

Inspired by Celtic and Turkic languages, Otg (pronounced /o-ti/) has word-initial case markers, vowel contrast and harmony for grammatical function, and - as you may have gathered - contorted pronunciation of the Latin orthography. The language is mainly agglutinative, with the inflected nouns allowing free word order. The author has coined over 16,000 words, not all yet on the web site.

Ouranian-Barbaric was crafted by Peter Carroll and others. It is a fictional language. The web page is in English, German.

Like Ro, Oz is an a priori philosophical language, with a vocabulary derived not from natural languages but from a classification structure. The vocabulary was to be based on Roget's Thesaurus, but does not seem to have been worked out in its entirety. See Roxhai for an independent attempt at this type of language design.

Ozay, a personal language, was designed by Daniel Myers.

P@x'àãokxáã was created by Eddy Ohlms as a fictional naming language.

Pacarian is a personal language. It was developed by Sander Dieleman.

Paiodd is a fictional language and was invented by Jeremy Graves.

Pakitani was written by Paco "España". It is a personal language.

Pakuni, a professional fictional language, was crafted by Victoria Fromkin, PhD.

The language Pala-kalloejna's lexicon, once it has been generated, will consist of a set of names in a non- or super-hierarchical namespace (a web), with names (nodes) fuzzily linked to other names. Any name can have any number of links to any other names. The form the pattern takes will be malleable - indeed, every expression in pala-kalloejna will reshape the web - and will in itself define the names (i.e., describe usage patterns for the lexemes). Contrast with a hierarchical namespace like that of Roxhai.

Paleneo was designed by Leslie Charteris as a sign language.

Pamrul is an artlang. It was created by José Martínez.

Pamryr is a fictional language and was developed by José Martínez.

Pan-kel was invented by 1907 by Max Wald. It is an IAL.

Panovese Kal is a stealth language.

Pantato is for a fictional parallel Earth.

Parseltongue is a professional fictional language.

Pasilalion, a script language, was created by Mojsije Paic by 1864.

Pasilogia was developed by 1846 by Edward Groves as an international auxiliary language.

Patrienish is the language of Antarbhumi Ramrajya, the Inner Realm of Patria, a micronation dating back to 1972. It was invented by Mike Brooker.

Paulic was written by Paul Smith.

P'bankian is a fictional naming language and was crafted by Dtsdesign.

Pélénne was designed by Tom Killingbeck. It is a personal language.

Pe'Ma'De, a personal language, was created by Eric the Best.

Perilo was developed by Horváth Róbert as a . The web page is in Hungarian, Slovak, Esperanto.

Perio is a philosophical language. It was invented by Mannus Talundberg in 1904.

Phaleran is the language of the inhabitants of Gelenê, a large satellite orbiting the second planet of Upsilon Andromedae and was written by Thomas Wier.

phonetic picture-writing was crafted by Leonhard Heinzmann. It is a philosophical language.

Piat, for a fictional Central European country, was designed by John Cowan.

Pictban was created by Dtsdesign as an international language.

Picture Language is an auxiliary language. It was developed by Wally Flint.

Pig Elvish is a personal language and was invented by Bicoherent.

Pig Latin was written by Anonymous. It is a personal language.

Pikachu, the language of the Pikachu Pokemon, was crafted by Aneel Nazareth.

Pikutu was designed by μ as a personal language.

Pil'koska is a personal language. It was created by Tom Killingbeck.

Pisina is an auxlang and was developed by µ.

Plan B was invented by J. Prothero. It is a loglang.

Plan C, a logical language, was written by Jacques Guy.

Platio was crafted by J Carbajal as an IAL. The web page is in Platio.

Plefande is a personal language. It was designed by Pablo Barenbaum. The web page is in Spanish.

Pokemon is a professional fictional language and was created by Nintendo.

Poliespo was developed by Nvwtohiyada Idehesdi Sequoyah (Billy Joe Waldon). It is an international auxiliary language.

po'P'kp, a personal language, was invented by Xhin.

Poþi was written by Joseph W. Mynhier as a fictional language.

Prajiþiast is a fictional language. It was crafted by Eric Anger.

Primal is a personal language and was designed by Trickster.

Prime Lexicon was created by Dr. Chris K. Caldwell. It is a personal language.

Primitive Elvish, a fictional diachronic language, was developed by J.R.R. Tolkien in 1915.

Progressiva was invented by Suhardian,aka Mattia Suardi as an international language. The web page is in https://fun.supereva.it/suhard/LP_born.htm?p.

Projet d'une langue universelle presente a la convention nationale is an auxiliary language. It was written by Jean Delormel by 1795.

Proslava is an auxlang and was crafted by George ( Juraj ) Doudy.

Proto-Drem was designed by Kevin Urbanczyk. It is a diachronic language.

Proto-East-Arakhelian, an artlang, was created by Maknas.

Proto-Eastern was developed by Mark Rosenfelder as a fictional diachronic language.

Proto-Hambah is a fictional language. It was invented by Tom Little (Sêsâmân).

Proto-Liotan is a diachronic language and was written by Geoff Eddy.

Prototype Worlds was crafted by Eric Raymond. It is a superset language.

Psharádi (Modern Tsaran), a fictional language, was designed by Jashan A'al.

Ptokan was created by Ryan Eakins as a personal language.

Purdik is an IAL. It was developed by Steffen M. Turnipseed.

Pushakian is an international auxiliary language and was invented by Dr X.

q~'u^pl! was written by Adam Walker. It is the language of aliens of the Commonwealth.

Qa, a fictional language, was crafted by Tregetour Yare.

Qatama was designed by Carl Buck as a personal language.

Qelvietu is a fictional language. It was created by Robbie (AKA Zoqaeski).

Q'en|gài is a personal language and was developed by Henrik Theiling.

Qenya was invented in 1915 by J.R.R. Tolkien. It is an artlang.

Qhalite, a fictional diachronic language, was written by John Whatmough.

Qilmanian was crafted by Jordan Lavender as a fictional language.

Qtwyqp Qly is a personal language. It was designed by Marq Thompson.

Quebh is an international language and was created by Jake "Fat Kid" Zeroth. The web page is in English SV1).

Descended from Primitive Elvish, Quenya is the chief of Tolkien's Elvish languages, used mainly in The Lord of The Rings and The Silmarillion. The beauty of Quenya has inspired many to take up the hobby of model languages. Unfortunately, it was never a primary goal of Tolkien's to finish the design of Quenya, and his death left the vocabulary and grammar incomplete. This incompleteness has dampened the fires of enthusiasm for many who would have liked to have learned the language. At present there exists no single authoritative reference to the meta-history (the history of the creation of the fictional history) of Quenya. This gap will be filled eventually, when some unknown among us rises to the challenge of analyzing the editorial efforts of Tolkien's son, who has prepared a series of volumes relating the history of Tolkien's invention of Middle Earth. [Since I first wrote that in 1995, Helge Kåre Fauskanger has come close to achieving this.]

Quya was developed by Ricardo Pinto & David Adger. It is a professional fictional language.

Rachovian, a diachronic language, was invented by Geoff Eddy.

Radilu was written by Chris Collins as a personal language.

Rahha is for an agricultural people. It was crafted by James Campbell.

Ranamemi is a fictional language and was designed by Terence Donnelly.

Rap Lin Rie was created by Reginald J. G. Dutton, F.R.S.A. It is a fictional language.

Rav Zarruvo is the language of jungle inhabitants.

Ravenloftish, a personal language, was invented by Eric Anger.

Raxanakoa was written by Jonathana Tegire as a fictional language.

Rayatako is a fictional language. It was crafted by Michael Mechmann.

Rèaniano is a personal language and was designed by Giovanni Angelo Doveri.

Regelluga was created by Ben Poplawski. It is a personal language.

Reman, an artlang, was developed by Christophe Grandsire. The web page is in French.

Reñim was invented by Martin F. as a personal language.

Retehitu is a personal language. It was written by Alex Middleton.

Réziko is a fictional language and was crafted by J.T. Antley.

Rhean was designed by Mike Ellis. It is a fictional language.

Rhyllan, a fictional language, was created by Andrew J. Meilstrup.

Rigavie Sutanio was developed by Nate and Steve as a personal language.

Rikchik is the language of aliens known as rikchiks. It was invented by Denis Moskowitz.

Rinya is a personal language and was written by Daniel Andreasson.

Risan was crafted by Kári Emil Helgason. It is a fictional language.

Rivaansa, a fictional language, was designed by Schorreel, Thomas.

Like Solresol, Ro is a pasigraphy (an a priori philosophical language), with a vocabulary derived not from natural languages but from a classification structure. You can roughly guess the sense of a word by recognizing its initial letters; for instance, in Ro, bo- is the category of "sense-affecting matter", and color words (falling under this category) begin with bofo-: bofoc means "red", bofod means "orange" and bofof means "yellow". Unfortunately, if you make a typo in Ro, you've probably just spelled another word, and your spell checker is not going to catch the mistake..

Rodlox's Unnamed Conlang was created by Rodlox as a personal language.

Rokbeigalmki is a fictional language. It was developed by Steg Belsky.

Romana is an auxiliary language and was invented by Dan Tohatan.

Romanico was written by Anonymous. It is an auxlang.

Romanid, an IAL, was crafted by Zoltán Magyar in 1956. The web page is in Hungarian, English.

Romanova was designed by multiple contributors as an international auxiliary language.

Romulan is a fictional language. It was created by Diane Duane.

Rootian English is an international language and was developed by Joris Bollen.

Rosakeat was invented by Maknas. It is a fictional diachronic language.

Roxhai is a philosophical language, with its vocabulary automatically structured, as with Ro. For instance: r'o means "sentiment and moral power"; ro'yo, "religious affection"; roc'o, "supernatural being or region"; roca'yo, "Christian supernatural being or region"; and rocac'o, "God". The core vocabulary of Roxhai is based on nouns, with verbs, adjectives and adverbs derived from these. Roxhai was inspired by Solresol, Ro and Esperanto, and is still being refined.

Rrldha, a fictional language, was written by Tom Corcoran.

Rúmeann was crafted by jú as a diachronic language. The web page is in English SV1; .NET CLR 1.1.4322).

Rusakui is a fictional language. It was designed by Maknas.

Rúvuk is a fictional language and was created by Robert.

Saakha was developed by Adam Parrish. It is for the desert nomads of planet Endra.

Safo, an auxiliary language, was invented by Andreas Eckardt by 1956.

Saiwosh was written by Frank Legros as an artlang.

One of the few conlangs based on an Austronesian Language, Sakatda Ka Kadomo is a personal language inspired by Tagalog, but it is also the fictional language of the Jakautdok people of the Sierra Madre Mountains in the northern Philippines. The web site has a lexicon of 200 items, a grammar and a unique script.

Salanjan is a fictional language. It was crafted by Drydic_Guy.

San Corrado Langue is an auxlang and was designed by Jan Skrob. The web page is in oops.

Sap'e'o was created by Jonathon Bly. It is a fictional language.

Saphah, a fictional diachronic language, was developed by Anton Kemmeren.

Sarkelean is a fictional language.

Sarminath was written by Edward field as a personal language.

SASXSEK is an IAL. It was crafted by Dana Nutter.

Sathir is a personal language and was designed by David J. Peterson.

Satritain was created by Luther Blissett. It is a fictional language.

Saurian, a professional fictional language, was developed by James Gurney.

Scallin was invented by Kaurpin.

SCSL was written by Shanya Spiritskunk as a personal language.

Sea Elvish is a fictional language. It was crafted by Curtis Mullings.

SedoNeural is a superset language and was designed by Merle D. Zimmermann.

Seimi was created by Daniel Andreasson. It is a personal language.

I designed Sen:esepera to reform Esperanto to make it easier to pronounce. Where Esperanto has 23 consonants, Sen:esepera has only the 14 most commonly used consonants; where Esperanto permits complex consonant clusters (e.g., spr), Sen:esepera only permits clusters using nasals. Sen:esepera is also noteworthy for its kinship terms, capable of concisely expressing thousands of familial relationships.

Senu Yivokuchi, a fictional language, was developed by Pablo Flores.

Senyecan was invented by Charlie Brickner as a fictional language.

Serasraes is a personal language. It was written by Rodlox.

Sermo is an international auxiliary language and was crafted by Jose Soares Da Silva.

Seversk was designed by Libor Sztemon. It is the language of a North Slavonic people.

Sevorian, the language of a North Slavic people, was created by James Campbell.

Seyekoneth was developed by Michele C. as a personal language. The web page is in English SV1; .NET CLR 1.1.4322).

Shaelic is a diachronic language. It was invented by Scott Hutton.

Shaleyan is for the planet Shaleya in the Refea Solar System and was written by James.

Shan is the language of the Shan Cannibals.

Shaquelingua was designed by Remi Villatel. It is a fictional language.

Sharioléh, a fictional language, was created by Eugenio M. Vigo.

Sheli was developed by David J. Peterson as a personal language.

Sheng is a stealth language. It was invented by unknown.

Shilgne S'drawkab C'navdair is a personal language and was written by Tom R.

Shinoarnii was crafted by Shiari. It is a personal language.

Shkanshej, the language of the winged people of an alternate Earth, was designed by Pablo Flores.

Shoa was created by J. Harness as a fictional language.

Shondan is an artlang. It was developed by David C. Morrow. The web page is in N/A SV1; .NET CLR 1.1.4322).

Sialy is a fictional language and was invented by Aaron Morse.

Sidonian was written by Dtsdesign. It is a fictional naming language.

Signuno is an international language. The web page is in Esperanto.

Silarg, an auxiliary language, was designed by JP Mallaroni. The web page is in French|English.

Silindion was created by Elliott Lash as a fictional language.

Simlish is a . It was developed by Maxis Games.

Simpekso is an auxlang and was invented by Jonathon Grimes.

Simpenga, pronounced /sim-PEN-ga/, is a contraction of Simpela Engelisa, "Simple English." The language is just a phonetically simpler version of Basic English. Yawn.

Simpla was written by Samuel Fredrickson. It is an IAL.

A simplified English, with about a 500-word vocabulary. Unlike Basic English, SIMPLE does not aim to be a grammatical subset of English, but attempts to simplify the rules. The SIMPLE language is not so simple, for it does not formally specify its grammar (which appears to consist of some arguable but complex subset of English), it idiomatically forms new words that have to be learned (a'other, there-for), it ignores the issues of polysemy, and it permits a full range of verbal idioms (verb-preposition pairs: give up, put up, go in, etc.).

Sinampaiton, a fictional diachronic language, was crafted by Paul Hoffman.

The tongue of the Grey-Elves, itself descended from Old Sindarin and from Primitive Elvish, which is also the ancestor language to Quenya.

Sinnish was designed by Scott 'Blade' Hamilton as a personal language.

Skerre is for hunter gatherers of the Western Interior Range. It was created by Doug Ball.

Slavenian is the language of a North Slavonic people and was developed by Libor Sztemon.

Slavisk was invented by Libor Sztemon. It is the language of a Slavonic people.

Slezan, a diachronic language, was written by Jan van Steenbergen.

SLOVIO was crafted by Mark Hucko as an international auxiliary language. The web page is in English, German, French, Polish, Slovak, Russian, Spanish, Italian.

Slvanjec is an artlang. It was designed by Benct Philip Jonsson.

Sohlob is a fictional language and was created by Benct Philip Jonsson.

The cleverest philosophical language, the earliest constructed language to be successful and the most likely to be learned by Julie Andrews. Solresol is based on the musical scale and has just seven syllables: do, re, mi, fa, sol, la, si.

Somerish was developed by Bo Bernvill. It is a fictional diachronic language.

Somish, a personal language, was invented by Aaron Chapman.

Sona was written in 1935 by Kenneth Searight as an international language.

Sorgalo is a diachronic language. It was crafted by Carlos Cervera. The web page is in Spanish.

In his science-fiction story Gulf, supermen of the future used a language called Speedtalk. This "verbal shorthand" assigned every word a unique phoneme, so that resultant sentences were as short as a few English words. Use of the language enabled the superman to think more quickly and to experience more in less time.

Speedwords is an auxiliary language and was designed by Dutton, Reginald J. G. in 1936.

Spelin was created in 1889 by Georg Bauer. It is an auxlang.

Spet, an IAL, was developed by ACZ.

Spocanian was invented by Rolandt Tweehuysen as for Spokanië, a group of islands in the Atlantic Ocean, southwest of Iceland.

Spokil is a philosophical language. It was written by Adolphe Charles Antoine Marie Nicolas by 1904.

Stālāg is a fictional language and was crafted by Pablo Flores.

Stitch Words was designed by Disney. It is a professional fictional language.

Straifpin'r, a personal language, was created by Dtsdesign.

Streich was developed by Tommaso Donnarumma as the language of the Helu of the Archipelago of Elaire.

Strelwidhan is a fictional language. It was invented by PyterVoeros.

Strom is a and was written by Stephen Fry & Hugh Laurie.

Sturnan was crafted by Christopher Wright. It is the language of an Indo-European people.

Suma is an a priori language, but is unusual for the category in that its vocabulary does not use a systematic classification system. The language allows only CV (consonant+vowel) syllables, for easy-to-pronounce words.

Sunset Elvish (Pinuidan), a fictional language, was designed by Curtis Mullings.

Suoníppomí was created by Eric Anger as a fictional language.

Susachi is a personal language. It was developed by Bradford L. Lewis.

Svargó is a personal language and was invented by Stefan Lubbersen.

Swa-di was written by Bradford Morgan White. It is an artlang.

Invented by the Belgian comic artist Herge for the Tintin series, Syldavian is used as background in two of the books, notably King Ottokar's Sceptre. Rosenfelder has created a 200-word dictionary and has translated the sample texts, and developed a grammar to explain them, based on Dutch grammar, commenting, "As in restoring a fresco, a bit of invention was needed to form a coherent picture." Although the language of a fictional East European country, Syldavian is based on Dutch, but with a Slavic-sounding orthography and some French and German borrowings. This site has been written up in Le Monde and Il Corriere del Sera, and is mentioned on the website of the Fondation Herge.

Sylvyn is for the Silver Elves.

Szkev, a fictional language, was designed by zbihniew. The web page is in Polish.

Tá à p'u was created by Eddy the Great as a fictional language.

Ta Pémish Shprochna is a fictional diachronic language. It was developed by Jan Havlis.

Ta Ti is a stealth language and was invented by Marq Thompson.

There are four Taeisan Languages: Drgn, Iniel, Ohs and Petrocea.

Taki was written by Jerry Mings. It is a fictional language.

Talhata, a personal language, was crafted by David Stewart-Candy.

Madison has invented the imaginary country of Talossa (which claims part of Milwaukee as its sovereign territory). Talossan is a Gallo-Romance language, inspired by French, Provencal and Occitan, and very naturalistic (with quite a few irregularities). Little of the language is available on the Internet, but Madison does sell three books about Talossan: two dictionaries and a grammar. With over 20,000 words, it is one of the most detailed fictional languages ever invented. A principle weakness of the language is that it has no fictional derivation from Latin, with forms having been invented arbitrarily rather than regularly.

Talumena was designed by F.A.Fabian, Sr. as a personal language.

Tamarian is a professional fictional language.

Tanach-a Shile is a fictional language. It was developed by Doug Ball.

Taneraic is a stealth language and was invented by Javant Biaruja.

Tarnese was written by Etak. It is a fictional language.

Tarnif, a fictional language, was crafted by Nik Taylor.

Taruven was designed by taliesin as a fictional language.

Tasratal is a fictional language. It was created by Yoon Ha Lee.

Tatari Faran is a fictional language and was developed by H. S. Teoh.

Tatsique was invented by Nicola Curat. It is a personal language. The web page is in French.

Tazhi, a fictional language, was written by Makeenan.

Tech was crafted by Danny Wier as a fictional language.

Telerin is a fictional language. It was designed by J.R.R. Tolkien.

Telpuilkoc is a personal language and was created by Eddy the Great.

Telvo was developed by Jonathan North Washington. It is a diachronic language.

Telyana, the language of the Telyani Empire, was invented by Adam Parrish.

Tenctonese was written by Johnson, Kenneth; Johnson, Juliet; Ling, Van; Mislan, Scott as a professional fictional language.

You won't find a personal language being actively developed that is as deep and rich as Teonaht. Much is unique about it, from its word order to its verbal system to its affixing. It uses the rare OSV word order, can front the subject (SOV), yet repeats the pronoun before the verb. While a nominative language, Teonaht distinguishes between "volitional" and "non-volitional" verbs and subjects, so that the nominative has two forms, "agent" and "experiencer," also reflected in the verbs. Teonaht lacks the copula in the present tense. It has "the Law of Detachment," whereby affixes can switch from final to initial position in a word for rhetorical or prosodic purposes; this allows the tense suffix to detach and prefix the pronoun (an innovation copied by NGL). While putatively Indo-European, Teonaht draws very heavily from an unknown inflected language called "Nenddeyly".

A unique personal language, professionally designed and presented, and rightfully highly regarded among the Internet community of language modelers. It is simply the most professional treatment of an artlang on the Internet. Dirk has two annotated texts well worth reading: Coyote Eats Rocks and Two Otters. His frame story about his sources is an excellent one; because of it, some innocent web surfers probably think Tepa is a real language. By the time you finish reading about Tepa, you may think it's a real language too!

Terran is a fictional language. It was crafted by Josh Brandt-Young.

Tev'Meckian is a fictional language and was designed by Jeffrey Henning.

Tharan was created by Dan Cole. It is an artlang.

Thauliralau Triyk, the language of alien mammals, was developed by Jim Henry.

Thequm was invented by Sami Kleit as an international auxiliary language.

Thereskeya is for a female-dominated warrior society ruled by their queen the Candace. It was written by Ben Poplawski.

Thh:tmaa is a professional fictional language and was crafted by Matt Pearson.

Thiazic was designed by Chris Paull (Zeke Fordsmender). It is a fictional diachronic language.

Tho-Kyi, a diachronic language, was created by Karl Jahn.

Thosk was developed by Dean Easton as the language of an Indo-European people.

Thyllymas is a fictional language.

Tiemish is an artlang. It was written by Stephen Mulraney.

Tigerian is a fictional language and was crafted by Jonathana Tegire.

Tikasako was designed by Chris Paull (Zeke Fordsmender). It is an international language.

Tilya, a loglang, was created by Herman Miller.

tinico was developed by Collective as an auxiliary language.

Tinxirean is a fictional language. It was invented by Accard.

Tirelat is a personal language and was written by Herman Miller.

Tïsjelán was crafted by Jonathan North Washington. It is a fictional language.

Tjelwu, a fictional diachronic language, was designed by Jonathan North Washington.

Tlön languages was created in 1940 by Jorge Luis Borges as a professional fictional language.

Toaliralolo languages is a diachronic language. It was developed by Jim Henry.

Tokana is a personal language and was invented by Matt Pearson.

Toki Pona was written by Sonja Elen Kisa. It is a personal language. The web page is in English, Esperanto, Toki Pona.

Tomato, an auxlang, was crafted by Catty.

Tomoulini Ganmaa is the language of a fictional parallel Earth.

Torrin was created by Jeff Hopkins as a personal language.

This is an unusual language, with two very interesting features: first, a unique morphology for cases, and second, unusual formation of noun/verb pairs. Cases are marked on the end of preceding words (so, Vagu gat is "A cat sitting", where -u marks the case of gat, "sit"); this is well suited for forming compound words, e.g., tanosharasvanak is tan ("house") o-shar ("of selling", genitive) a-svanak ("drugs"), "pharmacy". Finally, verbs are formed from nouns by TRANsposing the initial and final consonants: e.g., tran, "speech", becomes nrat, "to speak".

Transcendent Algebra is a philosophical language. It was developed by J. Linzbach by 1921.

Transitional English is an IAL and was invented by Prof. John Lihani, Ph.D.

Triparik (or Triparian) is the language of a micronation, an artificial country, and as such is a group effort. Most of the root words are from Romance and Germanic languages, though Celtic tongues may end up contributing vocabulary. Designed to be fun but useful, the initial joke was that Triparian was "what Roman centurions used to chat up Gaulish barmaids." The web site features a thousand-word dictionary, a grammar, sample texts and the start of a primer.

Trurian was written by Jona J. Fras. It is an artlang.

Tsolyáni is one of the languages of Tekumel, the world of M.A.R. Barker's fantasy role-playing game Empire of the Petal Throne and novels (Man of Gold, Flamesong). Though all these works are out of print, Tekumel, Tsolyani and the other Tekumelani languages have a loyal following. Tsolyani was inspired by Urdu, Pushti and Mayan; a ULD lexicon is available.

Tsuhon, a fictional language, was crafted by Yoon Ha Lee.

Tsumhetyan was designed by Exu Yangi as a fictional language.

Tukbeyo is a personal language. It was created by Dtsdesign.

Tulari was developed by Rialian.

Tulinx is a personal language and was invented by J. Valler.

Tundrian was written by Gábor Sándi. It is for Tundria, an island off the western coast of France.

Tunu, the language of the Pacific Rim of the 2090s, was crafted by Mathias.

Molee designed Tutonish as an "Anglo-German union tongue" and actually intended for it to be not just an international auxiliary language but the new mother tongue of the Germanic-speaking peoples, supplanting their native languages. Tutonish has a phonetic spelling, a simplified grammar and a vocabulary drawn primarily from German and English. (See Folkspraak for a modern, ongoing effort at designing a pan-Germanic language.)

Tvernel was designed by Adam Walker as the language of aliens of the Commonwealth.

Tydash was created by NA.

Tyl Sjok is a personal language. It was developed by Henrik Theiling.

Tymat is a personal language and was invented by Shane Hodgson.

Uajiren was written by Steven Collins. It is a fictional language.

Ubbi Dubbi, a stealth language, was crafted by Unknown.

UberLingua was designed by Jonathan Hayward as a miscellaneous language.

Ukhik is for a fictional parallel Earth. It was created by Pablo Flores. The web page is in English|Spanish.

Ummo is a stealth language.

Ungil is a fictional diachronic language and was invented by Dean Easton.

UNI was written by E. Wainscott. It is an international auxiliary language.

Uni Mar, a fictional language, was crafted by J Harness.

Unideo was designed by Cattelain Eric as a . The web page is in French.

Unipix is a iconic language. It was created by Cindy Drolet.

Unish is an international language and was developed by Language Research Institute, Sejong University.

Unitario was invented by M. Pleyer. It is an auxiliary language.

Universal, an auxlang, was written by G. I. Muravkin and L. I. Vasilevskij in 1923.

Universal Character was crafted circa 1657 by Cave Beck as a philosophical language.

Universal Cipher Language is a philosophical language. It was designed by Charles Stewart in 1874.

Universal Networking Language is a fictional language.

Universal Translation Language is a logical language.

Universala Lingva Kodo is a fictional language and was invented by Linxiang Wang.

Universalglot was written by 1868 by Jean Pirro. It is an IAL.

Un'ky'ok, a personal language, was crafted by Jordan Lavender.

Unstränng was designed by Scott 'Blade' Hamilton as a fictional language.

Üqoi is the language of the Zhoooonaiï of the planet Kaj'eevdhuz. It was created by Bruce V. Bracken.

Uropi is an international auxiliary language and was developed by Joël Landais. The web page is in French.

Utésalañé was invented by Jordan Lavender. It is a personal language.

Uusisuom, an international language, was written by Daniel Tammet.

uuteib eafeis was crafted by David Caveney as the language of the elves on Faya.

Vabungula is a personal language. It was designed by Bill Price.

Vadhawian is for the Desert Wanderers of the Southeastern Desert and was created by Curtis Mullings.

Vaior was developed by William S. Annis. It is a personal language.

Valarin, a professional fictional language, was invented by J.R.R. Tolkien.

Valavya was written by Mariana Lo as a fictional language.

Valmelind is a fictional language. It was crafted by Asier G.

Vamperr is a fictional language and was designed by Bradford Morgan White.

Var'aq was created by Brian Connors. It is a loglang.

Vardhastani, a diachronic language, was developed by Anselm Huppenbauer.

Varro was invented by Jurre Lagerwaard as a fictional language. The web page is in Dutch|English.

Vash is a fictional language. It was written by Peter Ramsey in 1958.

Vayaun is an artlang and was crafted by Andrew Smith.

Ve Segelm A Laighödhét was designed by Carsten Becker. It is a fictional language.

Veltsin, a fictional diachronic language, was created by T. A. Wiebe.

Vendi was developed by Chris Ashton as a personal language.

Venyárin is a fictional language. It was invented by Ikkakujyu.

Not only does it have a large vocabulary (over 5,500 words) and a linguistically informed grammar, Verdurian also has a fully worked-out family tree, going back two levels: to its ancestor, Cadhinor, and to its ultimate origin, Proto-Eastern, with sister languages at both levels. It is naturalistic, with irregularities, sound changes, dialect differences, and interesting etymologies, giving it great appeal to others. And it's only one part of a complex created world, with its own biology, history, and belief systems.

Vihal is a fictional language and was written by Jonathana Tegire.

Viikqnnosf was crafted by Jan Havlis. It is a fictional language.

Viku, a logical language, was designed by Victor Medrano.

Vilani was created by Kenji Schwarz as a fictional language.

Vinlandic is an auxiliary language. It was developed by Tony Senn.

Vixen is a personal language and was invented by Curlyjimsam.

Vling was written by Victor Medrano. It is an auxlang.

VOA Special English, an IAL, was crafted by United States Information Agency by 1959.

Vogu was designed by Terence Donnelly as a fictional language.

Vogukadanë is the language of the Kadanë people of the planet Zyem. It was created by Teresh.

Voidä is a personal language and was developed by Kaspars Ozolins.

Voksigid was invented by Bruce Gilson; et al. It is a loglang.

With a name meaning "world speech", Volapük became something of a fad in the late nineteenth century and was the second international auxiliary language to win thousands of adherents (after Solresol); it was the precursor to Esperanto in popularity. It has a vocabulary based primarily on English and German roots that have been somewhat simplified for ease of pronunciation and morphological analysis. Its grammar was difficult enough that enthusiasts were rarely able to actually learn to speak the language. The language was successfully reformed in the 1930s. If Esperanto is the GUI (Graphical User Interface) of auxiliary languages, than Volapük is the DOS of the field. The language is primarily of interest now for historical reasons.

Volapük Revised, an international auxiliary language, was written by A. de Jong in 1931.

Völkerverkehrssprache was crafted in 1902 by C. Dietrich as an international language.

Von Morath Pasigraphy is a philosophical language. It was designed by Joseph de Maimieux in 1797.

Vônánà is a personal language and was created by Curlyjimsam.

Vong was developed by Victor Medrano. It is a personal language.

Harrison is approaching the design of Vorlin very professionally, and you can read his opinions about the requirements of an international language in an excellent essay on his web site. Harrison is the editor of the Journal Of Planned Languages and has prepared a detailed bibliography of constructed languages. He is arguably the foremost scholar of constructed languages working on the Internet today. Vorlin is most noted for its use of words with three letters for its base vocabulary. The language has changed significantly over the years and still has far to go, as Harrison restructures its vocabulary. This site is worth checking out periodically.

Vosh is the principal language for Monolothic Games' new fantasy world, Aberwyth. Since Vosh is intended primarily for gaming, it is being created to have as simple a set of grammatical rules as possible, while still being realistic. The 800-word lexicon is heavily tailored towards fantasy RPGs.

Voynich was invented by NA.

Vozgian, a diachronic language, was written by Jan van Steenbergen.

Waldzell Conlang was crafted by Mark P. Line as a fictional language.

Wamen is the language of the Dahaite. It was designed by Pablo Flores.

Wapadja is a fictional language and was created by Thomas Schorreel.

Wasabi was developed by Mari Bandoma, Deise Benítez, Allison Buckley, Pablo Cabrera, Marc Callado, Patrick Chan, Charles Chang, Sarah Choi, Lizzy Ghedi-Ehrlich, Julie Gutiérrez, Norma Guzmán, Helen Khlystova, Jason Lin, Tom Nosewicz, Miriam Ochoa, David J. Peterson, Chris Ramiro, Michael Rivera, Adam Simpson, Amy Soong. It is a jargon.

Watakassí, an artlang, was invented by Nik Taylor.

WDFDspeak (Ostopian) was written by Jon as a jargon.

An ancient language of Almea (the world Verduria is on), Wede:i is agglutinative, with no strict division into parts of speech, meaning a single Wede:i word can express quite a lot of English verbiage. Other unusual aspects, for a constructed language, include its logographic writing system and its base 6 number system. Finally, it fits into the history of Almea; its writing system became that of Axunashin, a distant relative of Verdurian, when the speakers of Axunashin conquered the Xengi valley; their language was also influenced phonologically and lexically by Wede:i. The lexicon lists over 600 words, with etymologies; a grammar, sample texts and description of the writing system are available.

Wenedyk is for Republic of the Two Crowns (Ill Bethisad). It was crafted by Jan van Steenbergen.

Wessisc is a fictional diachronic language and was designed by Damon M. Lord.

Western Zein was created by Drydic_Guy. It is a fictional language.

Westron, a professional fictional diachronic language, was developed by J.R.R. Tolkien.

Wilawossian was invented by Dtsdesign as a fictional naming language.

Wilkins' Analytical Language is a philosophical language. It was written by John Wilkins circa 1668.

WittyWordWork is a jargon and was crafted by Quentin Read.

Woznackh was designed by Eirik Wixøe Svela. It is a fictional language.

X was created by David J. Peterson.

Xail, a personal language, was developed by Sampo Taito Louke.

Xap II was invented by Andrew Leventis as a fictional language.

Xapqt is a logical language. It was written by Nick Summers.

Xara is a personal language and was crafted by Jim Taylor.

xathmel was designed by Paul Blake. It is the language of the planet Xa?n orbiting Ar.

Xianese, a diachronic language, was created by John Whatmough.

Xliponian was developed by Ronald Kyrmse as an artlang.

Xt! is the language of aliens of the Commonwealth. It was invented by Adam Walker.

xuxuxi is an auxiliary language and was written by John Cowan.

Yahina was crafted by Dtsdesign. It is a personal language.

Yathor, a fictional language, was designed by Jurre Lagerwaard. The web page is in English 5.1; .NET CLR 1.1.4322).

Yeaji was created by Edward Field as a personal language.

Yeishan is a fictional language. It was developed by Keolah.

Yeledumel Thanusil is a personal language and was invented by Eric Anger.

Yerti was written by Andy Helber. It is a stealth language.

Inspired by Lojban and Klingon, Yf Rgalin was developed to explore some features that were "amusing" to the author, while maintaining simplicity and regularity. It's a verb-first ergative language, with some attempt at Lojban-like regularity (but without quite so much rigor). There's some attempt to derive everything from verbs (except nouns). The phonology is slightly unusual; its sentence structure may be unique, as well as its verb structure (inspired by a feature in Basque).

Ygyde, a philosophical language, was crafted by Andrew Nowicki.

Yihhian was designed by Simon Whitechapel as a fictional language.

Yiirabarhi is a fictional language. It was created by Robert Eaglestone.

Yinglish is a jargon.

Y-irril is a personal language and was invented by Jeremy Marshall.

Yisian is a fictional language.

Yivrian was crafted by Jesse Bangs. It is a fictional diachronic language.

Ylhäällä, a fictional language, was designed by Lang Boy.

Yorlakesian (Mok'yorlak'ol) was created by Jörg "paleface" Burkel as for Yorlakesian Empire. The web page is in English, German.

Ypsìlònsk is a personal language. It was developed by Yulyan Ròt.

Ystheron is a loglang and was invented by Patrick Littell.

Ýtádý was written by Ren Willocks. It is a personal language.

Zadri, the language of the Zadarans, was crafted by Vionau Raitak.

Zan was designed by Edrik as a naming language.

Zaynktooks is the language of the Zanktooksians.

Zdekkite is a diachronic language. It was developed by Tom R.

Zegzolt is a personal language and was invented by Toni Keskitalo.

Zelknaym was written by Dtsdesign. It is a personal language.

Zengo is a language that allows Harrison to indulge his interest in words with five letters. The small vocabulary contains an eclectic mix of such words from different languages. Zengo was formerly called Penta (until Intel made him change the name :-).

Zhakish, a fictional language, was crafted by Keolah.

Zharranh was designed by Herman Miller as for the furry four-foot Kireethin.

Zhong Ying is a jargon. It was created by A Forrest.

Zhyler is a personal language and was developed by David J. Peterson.

Zim was invented by Stefan Koch. It is a personal language.

Ziotaki, an artlang, was written by Shihali Ramichu.

Zireenka is the language of another one of Miller's furry aliens, the Zireen, who dwell on the planet Reeshai, in the general direction of Ursa Major. This site has a playful introduction to the language, a very short vocabulary and sample sound files. Zireenka is a tonal language.

Zjivalian was crafted by J. R. Mauro as a fictional diachronic language.

Zoggian is a diachronic language. It was designed by Jan Havliš.

Zoinx is a fictional language and was created by Roger Espel Llima.

Zurbian was developed by Torbjoern Andersson. It is a fictional language.

Zurvár, the language of the nomadic, maritime Zurvár (Surf) people., was invented by James Nicholls.

Zusayan was written by Necralitor as a naming language.

Zyem is a fictional language. It was crafted by Terence Donnelly.