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.
4D - 4D is a relational database management system and IDE.
Clever - syncing between education applications for K-12 schools
Informix - IBM Informix is a secure embeddable database optimized for OLTP and IoT data. Informix can seamlessly integrate SQL, NoSQL/JSON, and time series and spatial data.
Claroline - Claroline is a collaborative eLearning and eWorking platform.
H2 Database - H2 is free SQL database written in Java