Synfig Studio - Just another WordPress site
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Duik - Comprehensive animation and rigging toolset for Adobe After Effects
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
Limber for After Effects - IK system for After Effects using shape layers as limbs for character animation
ZBrush - ZBrush is a digital sculpting and painting software solution.