QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.
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.
2016 Photo Challenge - Take a photo every day for 366 days
Clever - syncing between education applications for K-12 schools
Woolah - Knockout Photo challenges with your friends.
Claroline - Claroline is a collaborative eLearning and eWorking platform.