Digital Dialects

Hello World - Interactive Site for learning English, French, Russian, Indonesian, etc., etc., etc.,

Multilingual Math Glossary

Spanish TV - learning Spanish for students

Multilingual Dictionary

Radio Lingua - learn a language by listening online and following Twitters in various languages.

Jollo - This new translation tool allows students and teachers to type a word or phrase to be translated to/from 41 languages.

Internet Polyglot

Online Language Courses - everything from Afrikaans to Yiddish.