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.

Fluent - Fluent is a people-based marketing platform that uses real-time, one-to-one interaction to create custom audiences and serve personalized ads that drive performance at scale.

OptiLingo - OptiLingo: Dreaming of Speaking a New Language?

Grammarly - Clear, effective, mistake-free writing everywhere you type.

Mate Translate - Ultimate translation app for Mac, iOS, Chrome and many more

VocabDepot.com - VocabDepot is going to increase your vocabulary, everyday, for free. Create or learn new word lists with a few simple clicks and practice vocabulary with a smile on your face.