OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...
slimanimation - to make stick figure or hand drawn animations
Synfig Studio - Just another WordPress site
Brush Ninja - Hand-drawn Animated Gif Creator
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Pencil2D - Pencil2D is an opensource animation/drawing software for Mac OS X, Windows, and Linux, based on old...