Marionette Studio - Marionette Studio is an online animation software for beginners and professionals. Animate 2D characters and environments in minutes with no prior skills.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Jitter - A simple animation tool on the web
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
Spirit - The animation tool for the web.
Autodesk Maya - Maya is 3D computer animation software with powerful modeling, rendering, simulation, texturing, and animation tools for artists, modelers, and animators.