As of March 26th, 2016, the animation software behind Studio Ghibli films (since Princess Mononoke), Futurama, Balto, and a whole bunch of other notable shows and films is now free and open source on Github under the New BSD license. They're already plenty of tutorials out there to get started with on YouTube since it's released. I'm gonna fiddling with this a lot. P.S. As of the initial 1.0 release, they're some reports that it's a little crashy on Windows, and a tad rough around the edges. 1.0.1 should fix the issues.