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.
Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.
Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
MondlyAR - Learn languages in augmented reality
Mate Translate - Ultimate translation app for Mac, iOS, Chrome and many more
Lingvist - Lingvist helps you take your foreign language skills to the next level with a broad selection of exercises and lessons.