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.
Andy Chatbot - Learn and practice English with exercises, grammar and games
Magiclingua - Speak a new language with confidence
English AI - Practice conversation in English with AI
Cambly - Private language tutors on demand.
Pili Pop - Great language learning method for kids