CreaToon - CreaToon is a free easy to use animation program.
Pencil2D - Pencil2D is an opensource animation/drawing software for Mac OS X, Windows, and Linux, based on old...
slimanimation - to make stick figure or hand drawn animations
OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...
Toon Boom Harmony - Production-ready animation software for every artist, in any style.
Brush Ninja - Hand-drawn Animated Gif Creator