Aluric: an incomplete alien language containing 70 sounds, 7 noun/adjective cases, a complex but logical tense system, and a vocabulary drawn from roots present in many languages and expandable by means of numerous affixes.
ámman îar: artlang with grammar using arguments, the language is fairly well defined and lexicon (which is incomplete) is logical though not completely systematized
aUI: an interesting proposal for
an auxlang, called "the Language of Space," aUI consists of 31 elements of meaning
thought to be the most basic and universal categories of all languages. The list of
categories includes such things as space, movement, light, human, life, time, matter, sound, mind/spirit,
feeling, good, negation, this, action, quality, together, before, towards and above.
Baanzish: A Germanic conlang which is almost wholly uninflected and has a regular grammar. Its vocabulary is far more regular than other languages'. As with the natural Germanic languages Baanzish is basically an isolating language but with a range of common prefixes and suffixes, which can be combined.
Bahasan
Balbylon: collection of phrases and sentences combining words of different languages
Barallen: very briefy and sketchy sketch of an artlang
Baronh: Morioka Hiroyuki's conlang incorporating some ideas from Japanese,
a more detailed grammar is available in
Japanese along with a
dictionary.
Barsoomian: The Language Of Edgar Rice Burroughs' Mars
Bogomol: another impractical "alien" language, but one with a novel idea
that I haven't come across before of a rank system for possible meanings of morphemes.
Brithenig: a thought-experement to create a Romance language that might have evolved if Latin speakers had been a sufficient number to displace Old Celtic as the spoken language of the people in Great Britain.
Cenlatorre: inspired by languages like Italian, French, Japanese
Ceqli: Ceqli began as an attempt to reform Loglan and make it more user-friendly. Since that beginning, it has departed more and more from Loglan.
A detailed explanation is found here.
A very logical and workable language with words roots taken from
known languages (Mandarin, etc.) and a simple grammar.
CycL: a formal language whose syntax derives from first-order predicate calculus (the language of formal logic). In order to express common sense knowledge, however, it goes far beyond first order logic.
The vocabulary of CycL consists of terms. The set of terms can be divided into constants, non-atomic terms (NATs), variables, and a few other types of objects. Terms are combined into meaningful CycL expressions, which are used to make assertions in the CYC® knowledge base.
(As far as I can tell, the language is not designed to function as an auxlang.)
Dael: Dallin Woolstenhulme's language partially based on English, French, German, and the other languages
Danovën: a logical conlang,
fairly well developed. Sound system somewhat logical.
Degaspregos: a fairly detailed description of a conlang with a number of fairly complicated features such as mood, aspect and evidentiality (information on how something is known).
Esperanto, USA--for more on Esperanto, see Esperanto section below
Eurial: takes its vocabulary mainly from Latin, the Romance languages and Greek in that order, with occasional forays into Slavic, Germanic and Celtic, at the same time striving for widely recognizable roots and avoiding a too mixed appearance. The grammar strives to be naturalistic, easy and unambiguous.
Eurolang: proposed European auxlang designed to be easy to learn
Gilo: a very well done, practical auxlang, especially easy for those who know some English.
It uses International conventions for numbers and Latin based plant & animal genus names transcribed into phonetic Gilo words
Classification of words is based on those used by Peter Roget in his Thesaurus
Gladilatian: a language that tries to do away with verbs
Kélen: an interesting language.
Author's description: "Learning about universals made me wonder what a language would be like that violated them. ...my strategy was to take a universal (namely, all languages have large open classes of nouns and verbs) and violate it. So, Kélen lost all of its verbs and became a language of nouns and particles."
Kiffish
Kinya
Kiromi
Klingon: a popular artlang used in Star Trek series and by avid trekkies
Láadan: language developed with idea that existing human languages are inadequate to express the perceptions of women
It has a number of very interesting features: i.e., Speech Act Morphemes and Evidence Act Morphemes (reminds me of Korean and Japanese) and an interesting pronoun system.
Lingua Franca Nova: language, similar to Esperanto,
designed to be logical and fairly easy to learn
Liva: a logical language by Claudio T. Gnoli which does not seem very user friendly
Logban: a constructed language originally called Loglan by project founder Dr. James Cooke Brown, who started the language development in 1955. Loglan/Lojban has been built over four decades by dozens of workers and hundreds of supporters, led since 1987 by The Logical Language Group.
It is one of leading conlang projects on the internet yet few people are said to actually speak the language. It has a number of very unique and interesting features.
Mesogeoika: a mixture of Modern Greek, ancient Greek, Cypriot (a Greek dialect), German , English, Latin, French, Italian, Spanish and Portuguese and other languages around the world but of insignificant amount.
Novial: Novial is the international auxiliary language created by Otto Jespersen and published in the year 1928.
Nuirn
Nyo'fa it is not spoken by humans, many things about it are quite different. Its syntax is generally VSO or VOS, the only real requirement is that the verb is first, as the rest of the grammar is determined by particles and pre- and infixes to the verb.
Opus-2: Verbs in Opus-2 take the form of colours. Nouns take the form of sounds. Adjectives take the form of smells. Adverbs take the form of inner-ear sensations. Certain tenses and phrasings are indicated by tastes.
Rikchik: The rikchiks speak in what would be called sign language by humans. The rikchiks use 7 of their tentacles to speak with, putting each tentacle into a given shape and position to form a word. A sequence of words is assembled within the rikchik mind into a tree-like sentence structure.
Rivertongue: some words, etc., but not a functioning language
Ro: an a priori 'philosophical language,'
you can guess what category of meaning a word falls into merely by looking at the first letters.
For example, bofoc means red, bofod means orange, and
bofof means yellow. It was created by the Reverend Edward
Powell Foster (1853-1937).
Rokbeigalmki: an artlang with its own script and complex phonetic system
Romanova: A regularized blending of French, Spanish, Italian, and Portuguese, intended for communication between speakers of all Romance languages.
Shotali has a fairly simple sound system, and is somewhere in between inflecting and agglutinating in structure. It is typically SOV (Subject-Object-Verb), but it uses a large number of cases, making other configurations possible. It uses prepositions, but other descriptive words like relative clauses and adjectives go after the nouns that they modify.
Sona: short example and brief explanation, an interesting idea of using "radical" forms, although the connection between the words in the examples are not readily apparent
Suma: (the 1000-Word Universal Language) was devised by Dr. Barnett Russell in the United States and first published in 1957. Subsequently, however, Dr. Russell increased the maximum vocabulary to 2000 words (brief description only).
The Ronnes: artlang which has been worked out fairly well, has mood and aspects and script
Tokana: an interesting 'naturalistic' artlang reflecting some influences from many less-spoken languages such as
Basque, Choctaw, Cree, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Irish, Kwakwala (Kwakiutl), Lakhota, Malagasy, Quechua, Spanish, Tagalog, Warlpiri, and Welsh.
Triparian: the language of a micronation, words are from Romance and Germanic languages, though Celtic tongues may end up contributing vocabulary, web site features a thousand-word dictionary, a grammar, sample texts and the start of a primer.
Unish: Korea's Sejong University's project to create an auxlang, the language is very logically developed and well-explained with
parallel sites for Korean, Chinese and Japanese speakers.
Uwakirola, designed for beauty, but seems somewhat practical
Verdurian: an interesting artlang with extensive explanation and a good
dictionary
Viko: an art language, created as an expression of minimalism, simplicity, and xenophilia, designed to provide a beautiful platform for writing haiku poetry.
Inspired by Japanese and Polynesian languages.
Voksigid: a syntax somewhat influenced by Japanese (but reversed; Japanese is verb-last and postpositional, Voksigid is verb-first and prepositional), and a vocabulary based mostly on European language roots.
Vong: there are three tones: the even tone, the rising tone, and the falling tone. The rising tone is indicated by an acute accent (like vóng), and the falling tone is indicated by a grave accent (like vòng). The even tone has no accent (like vong). The tone changes the meaning.
Vorlin: a well-thought out language with detailed grammar. It's a
workable auxlang with well-defined constraints on what counts as a morpeme.
Landau Universal Vocabulary: Painstaking research of word frequency lists, basic concepts and important things to have to
discuss has led to the creation of the Landau Universal Vocabulary. The main bulk of this list consists of 2,000 general words, each identified by a number. Since this list is international, words are categorized by meaning and part of speech.
Tyalie Tyelellieva: This website and the related publications and projects are intended to encourage and assist people in learning to speak, read and write the Elvish languages.