Clever - syncing between education applications for K-12 schools
Courseroot - Biggest online course database on the web
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Alcamy - Free, open self-learning platform. Learn & teach anything.
Claroline - Claroline is a collaborative eLearning and eWorking platform.
Startup Stash - A curated directory of 400 resources & tools for startups