Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
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.
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
LanguageBeast.com - Study English synonyms and antonyms to enrich your vocabulary
EventMobi - EventMobi is an interactive mobile event app, audience response and engagement platform for conferences and trade shows.
Babble - A more personalized social network