Eclipse Origins - This is a free software used to create online multiplayer games for people that don't know how...
Clever - syncing between education applications for K-12 schools
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
PlayCanvas - PlayCanvas is an open-source game engine built on WebGL and WebVR.
Claroline - Claroline is a collaborative eLearning and eWorking platform.