Lingbe - Practice a language with native speakers
Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
BoldVoice - Accent coaching app for non-native English speakers
Emoji Translate - Turn your text into emoji automatically
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.
Inspector Spacetime from Google - Google Translate for engineers working with motion