Trivia Crack - Produced by Etermax, Trivia Crack lets players answer trivia questions and compete against other people on mobile devices.
EduDo - EduDo is a video discussion platform
QuizClash - In QuizClash, you can challenge your friends or random opponents to a game of trivia.
Courseroot - Biggest online course database on the web
QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.
PalPark - Curate and share your learnings by topics