The following provides an index to organizations, publications and other sources of information on so-called "planned", "constructed" or "artificial" international languages and their relevance to general and applied linguistics, sociology, semiotics, political and educational science. Of more than 900 attempts to create such languages, only one, Esperanto, has acquired a world-wide speech community. Esperanto studies are thus a particularly important and active branch of interlinguistics, as this field is generally known.
Most of the information here has been provided in English, which may give a misleading impression of the field of interlinguistics as a whole. Much important work has been done in French, German, Russian, and other major scientific languages, and above all in Esperanto itself. No serious researcher in this field should neglect the material available in these other languages.
An Introduction To Esperanto
A website providing information on Esperanto and the field of Interlinguistics. The site also provides access to academic articles on these topics.
A mailing list on "social interlinguistics."
Center for Research and Documentation on World Language Problems
An international research network on interlinguistics and Esperanto studies.
Esperanto and Education
A reference page on educational organizations, programs, courses and research.
A series of short monographs published by the Universal Esperanto Association.
Gesellschaft für Interlinguistik
A German language Interlinguistics resource site.
Journals, Newsletters, Bibliographies and Web Sites
Where to look for further information, in print and on line.
Towards an Interlingual Internet
Detailed overview of interlingual resources available on the Internet.
Utilika Foundation advances the philosophy, science, and technology of communication and collaboration among diverse human and artificial agents. Through pure and applied research, publications, and conferences, the foundation participates in the planning for a world of interactivity among human beings everywhere, across all boundaries, and between humans and machines. Utilika Foundation's special interests relate to language diversity and the complexity and ambiguity of human language. The foundation is focusing on strategies that adapt natural languages to achieve ambiguity-controlled and automatically tractable meaning representation and communication in the Semantic Web and other human-machine multiagent systems.
Virtual Esperanto Library
A comprehensive information source on Esperanto.
Vera Barandovská-Frank, Introduction to Interlinguistics (textbook in Esperanto)
Chris Bogart, Constructed Human Languages (general index page)
James Chandler, International Auxiliary Languages (index site and classic essays by Jespersen, Sapir and others)
Wolfram Diestel, Online Esperanto Dictionary (in Esperanto)
Don Harlow, Esperanto Literature on the Web (in Esperanto)
Jouko Lindstedt, "Review of Plena analiza gramatiko de Esperanto" (in Esperanto)
Jouko Lindstedt, Summary of Kees Versteegh's "Esperanto as a First Language: Language Acquisition with a Restricted Input" (Linguistics 31, pp. 539-555)
Jouko Lindstedt, DENASK-L, Esperanto as a First and Family Language (in Esperanto)
Hartmut Traunmuller: course outline in interlinguistics at Stockholm University
Hartmut Traunmuller, "Conversational Maxims and Principles of Language Planning"
Martin Weichert, Esperanto Libraries, Bibliographies and Catalogues (in Esperanto)
Bertil Wennergren, Complete Handbook of Esperanto Grammar (in Esperanto)