Mobilizon - A free and federated tool to get our events off Facebook

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.

Upcoming.org - A simple way to share and discover interesting events

LanguageBeast.com - Study English synonyms and antonyms to enrich your vocabulary

Happer - Meet people & participate in activities, happier together

Babble - A more personalized social network