PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
ERDLab - ERDLab | Entity-Relationship Diagram Tool for Professionals
Clever - syncing between education applications for K-12 schools
Airforms - Got a database?
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.
Google Forms - Simple web forms from Google.