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.
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Clever - syncing between education applications for K-12 schools
awesome - A dynamic window manager for the X Window System developed in the C and Lua programming languages.
Claroline - Claroline is a collaborative eLearning and eWorking platform.
dwm - dwm is a dynamic window manager for X. It manages windows in tiled, monocle and floating layouts. All of the layouts can be applied dynamically, optimising the environment for the application in use and the task performed.