Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
GoAnimate - Make your own animation quickly and economically with GoAnimate. Reach prospects and customers with animated videos online about your business and products.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Animaker - Animaker is an online do-it-yourself (#DIY) animation video maker that brings studio quality presentations within everyone's reach. Animated Videos, Done Right!
Sculptris - Sculptris: Enter a world of digital art without barriers.
HandBrake - HandBrake allows users to easily convert video files into a wide variety of different formats.