Woolah - Knockout Photo challenges with your friends.
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.
SPAR! - Challenge your friends. Put money on the line. Get better.
Clever - syncing between education applications for K-12 schools
ShutterSpots - Find & share photo locations nearby & all over the world!
Claroline - Claroline is a collaborative eLearning and eWorking platform.