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.
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.
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.