Quick Link
various
Pricing
free
https://github.com/cheece/JiggleArmature
https://github.com/parrygod1/Physics-to-Bones
https://github.com/SAM-tak/gen_rigidbodies
https://github.com/dskjal/Rigidbody-Bone
https://github.com/eternal2dlife/blender-wiggle-fork