See also:

• Science: Social Sciences: Linguistics: Languages: Constructed: International Auxiliary: Esperanto  (83)

• Uniono por la Linguo Internaciona (Ido)   - Official site of Ido, the international language. Site in Ido and tens of other languages.

• Elektronala dicionario de la linguo internaciona Ido - Interactive multilingual dictionary of the international language Ido. In Ido.
• Ido - An encyclopedia article on Ido, including sections on grammar, history and international conventions.
• Ido, Esperanto Reformita / Ido-Skolo - Elementary, intermediate and advanced level lessons in English to teach the Ido language / Vortaro Ido-Esperanto, Esperanto-Ido da Sro Kuriyama Hitoshi / Vortaro Ido-Angla, Angla-Ido.
• Ido, linguo internaciona, universala - Useful links leading to web pages about the international language Ido in many languages.
• Ido: The International Language - Collection of information and resources for students, speakers, and anyone interested in the language.
• Idolisto - This is a e-mail list for Ido. It's a really busy list, so it's very useful for people who want to learn Ido. Writing messages to this list in other languages than Ido is strongly discouraged.
• The International Language Ido - Contains numerous downloadable plain text resources, including Ido wordlists (dictionaries) for English, German, French, and Italian.