Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.
Clever - syncing between education applications for K-12 schools
Buzz! The Big Quiz - Buzz! The Big Quiz is a Trivia, Party, Single and Multiplayer video game developed by Relentless Software and published by Sony Computer Entertainment.
Claroline - Claroline is a collaborative eLearning and eWorking platform.
Trivia Crack - Produced by Etermax, Trivia Crack lets players answer trivia questions and compete against other people on mobile devices.