Chudo Virtual Spaces - Play around, meet friends, study or party with avatars!

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.

Friendship Project - Friend-finding app based on thought-provoking questions

Babble - A more personalized social network

FreeTime - Calendly for friends

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