What program do you use for animation?

Hey I'm a fan of your series, and I admire the way it is made :) I know it's not as professional as the original Total Drama, but of a fan made version it's revolutionary :D I my self have an idea of a miniseries, containing Total Drama characters, but not in a competition way. I have the characters, I just want to know how you make the animations? Feel free to link to software, and keep up the amazing work :) By the way, I'm waiting with excitement for the next episode (If the project is not closed down) :D