The aRQuadruped Rig has been used for both Commercial and Feature Film. Great for cartoon and realistic animation.
Features
Ik/Fk matching
Bendy/Stretchy
Squashing
Isolated Hips/Chest/Head
Space/Switching
No flip twisting
No gimbal lock
Custom rotate orders
Compatibility
Available for Autodesk Maya
No plug-ins required
Motion Capture compatible*
Massive compatible*
Unity compatible*
aRFace compatible
aRPicker compatible