Blender – Bonedynamics Pro v1.6.5

Features:

•     Tweak  one or multiple bones physics parameters on the fly (Pro)
•     collision on the entire bone
•     Bones react to movement and collision.
•     Super easy to setup.
•     Ability to stretch bones.
•     Ability to make a bone chain. (Pro)
•     Easy to tweak (it uses soft body under the hood).
•     Upcoming updates for free.
•     Enhanced baking system (Pro)
•     Dynamic Parenting (Pro)
•     Displacement (Pro)