If you don't know Tupi, you might have heard of KToon. It is/was a 2D animation tool. As the website makes painfully clear, development halted about 1,5 years ago. Since then, a Brazilian developer has picked it up. He decided to rename the project to Tupi and move on with it. Since then, he has made regular releases and quite a few funny video's:
But on the Tupi website the following video is now featured:
The tupi author would like to visit the Libre Graphics Meeting 2012 in Vienna. Turns out the trip is a tad too expensive so a Pledgy has been set up to help out! So if you know Tupi, want to play with it, and want it to be successful: go here and donate!