Google Translate for Android allows for the easy translation of text between more than 90 languages as well as words and phrases between more than 60 languages. Google Translate for Chrome also available.

Duolingo: Language Lessons for Android helps to teach you Spanish, French, German, Portuguese, Italian, and English right from your handheld device.

Memrise can teach you how to speak like a native and unlock your foreign language abilities.

The Kindle app is optimized for Android devices giving users the ability to read Kindle books on a beautiful, easy-to-use interface. Available for the PC here.

Wikipedia for Android is a free encyclopedia that contains more than 32 million articles in 280 languages, and is the most comprehensive and widely used reference work humans have ever compiled.

Field Trip allows you to look for cool things wherever you are.