PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
SchoolWires - Schoolwires provides strategic online communication, community-management and productivity solutions to the K-12 education market.
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.
Clever - syncing between education applications for K-12 schools
Claroline - Claroline is a collaborative eLearning and eWorking platform.
Question2Answer - A Q&A site helps an online community to share knowledge.