Ithkuil is a cross between a philosophical language and a logical language, with a unique morpho-phonemic script. It is designed to reflect a high degree of cognitive intent in the most efficient manner.

Also known as Cheng-lee, it is a logical language created originally as an attempt to reform Loglan, by Rex May.

An auxiliary language developed by Rex May, strongly influenced by Mandarin.

Danovën the language of logic, is the strictly unambiguous form of Arovën, the language of thought, designed by J.J. Shinavier.

List and links prepared by Alkaline creator of Minyeva logical language. Brief useful explanations of and links to other logical constructed languages like Loglan, Lojban, Voksigid, gua!spi, Ceqli, Liva, AllNoun, Danovën, Arovën and CycL.

A language, version 3.2, developed by Claudio T. Gnoli. Introduction, writing system, phonology, morphology, syntax, vocabulary.

General information on logical language Loglan founded by James Cook Brown with grammars by Bob McIvor and novels by Alex Leith.

A language designed to reflect the underlying semantics of sentences and semantic organization of words with more regularity than natural languages.

A logical language created by Cycorp. The vocabulary of CycL consists of terms.

Logical language developed by Bruce R. Gilson for reforming of Loglan and Lojban. Greatly influenced by Japanese but reversed verb-first and prepositional.

Description of Ygyde, an auxiliary language. It has the ability to define all meanings in short (7 letters or less) compound words.