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.
OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...
Clever - syncing between education applications for K-12 schools
Synfig Studio - Just another WordPress site
Claroline - Claroline is a collaborative eLearning and eWorking platform.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.