Autodesk's 3D character animation software MotionBuilder 7.5 simplifies keyframe animation and features other enhancements.

Pencil2D is a free and open-source animation tool, which makes it ideal for all types of users, especially creatives who want to create basic animations without the overhead of software costs.

Moho is designed to enable artists to create animated cartoons, and includes drawing and color tools as well as keyframe animation tools, multi-layer compositing and more.