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.

Community Canvas - A framework to build meaningful communities

COOLPHABETS - Helping kids around the world learn their native alphabets.

Geneva - An all-in-one communication app for groups & communities

Fun Learn - Games and Education & Reference

Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.