PuppetShop 3.4

Puppetshop is a FREE Rigging and Animation plugin for 3dsmax 8 (or higher). It offers a unique blend of easy to use animator tools, while keeping the 'backdoor' open for technical directors.
Rig unlimited number of Spines, Arms, Legs, Necks, Custom Bone Chains in no time. All creatures, human (biped) or otherwise are handled the exact same way and Puppetshop is tightly integrated into 3dsmax.
With Puppetshop you can store any number of animation clips in a single max file and switch seamlessly between them. Import and edit Motion Capture data (BVH), including Biped compatible BVH clips. And manage all your assest via the build-in Library System.
Copy and Mirror animation data between bodyparts While an optimized trackview shows only the controllers animators care to see. Puppetshop removes a lot of the technical headaches from the rigging process. It can save you countless hours by not having to rig the same types of skeletons over and over by hand.
Game animators can preview animation blends before wasting programmer time to implement it in-game by using the Clip Editor.