OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...
SDL - Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level...
Synfig Studio - Just another WordPress site
raylib - Cross-platform, open-source game development library in C.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
WebGL - WebGL is a JavaScript API for rendering interactive 3D computer graphics and 2D graphics within any compatible web browser.