Science - Social Sciences - Language and Linguistics - Constructed Languages

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This category in other languages:

Catalan (18) Dutch (13) Finnish (5)
German (15) Norwegian (8) Spanish (9)
Swedish (25)

Constructed Languages - Links to many conlang sites as well as the author's own conlang.
Earth Minimal Language - Complete 220 word second compact language.
Phonetic Picture-Writing - Phonetic picture-writing can also be read phonetically. Its ideograms are composed of special letters. Authored by Leonhard Heinzmann.
Universal Language Dictionary Project - An attempt to create a list of concepts, described in English, along with words to express those concepts in several natural and artificial languages.

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