Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
Mate Translate - Ultimate translation app for Mac, iOS, Chrome and many more
Microsoft Translator - Microsoft Translator is your door to a wider world.
TransKey – Chat Translator App - TransKey – Chat Translator App is a rich-featured keyboard extension, enabling you to translate your messages inside any social media application like WhatsApp, iMessage, Facebook, Email, Twitter, Instagram, and many others.
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
TRANSKEY – translator keyboard - TRANSKEY – translator keyboard is an application that is designed as a keyboard translator, enabling you to convert your smartphone keyboard in any appropriate language in no time.