Mango Languages
Online language learning system teaching conversation skills for a wide variety of languages. Check out Mango Mobile for an app for your iPhone or Android device.

Muzzy Online
Online language learning for children. English, French, German, Italian, Spanish, Mandarin Chinese, Portuguese and Russian.

Oxford Language Dictionaries
Fully searchable, comprehensive bilingual dictionaries with study materials that provide extra help with learning and using an expanding range of languages.

Oxford Reference - Bilingual Dictionaries
Bilingual dictionaries from Oxford University Press covering French, German, Irish, Italian, Latin, Spanish and Welsh