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
Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.
Flalingo - Teaches English online
MondlyAR - Learn languages in augmented reality
BoldVoice - Accent coaching app for non-native English speakers