Synfig

Synfig Studio - so what freeware software can top Inkscape? If you have the time and patience to go over a very steep learning curve then Synfig Studio is the best choice. It has a lot more options for artists and is even capable of frame by frame animations. Many cartoonists use Synfig Studios to do cartoon animations especially for advertisements or when they want to present a sample (2-3 minutes) to a large animation studio. Some Japanese anime studios use Synfig when they are making episodes for their anime show.

Synfig is a powerful, industrial-strength vector-based 2D animation software package, designed from the ground-up for producing feature-film quality 2D animation with fewer people and resources.

Click here to download the software ==> Synfig