Pricing
free
Wiggle 2 is a ground up rewrite of the wiggle bones add-on for Blender.
Wiggle Bone 2:
https://github.com/shteeve3d/blender-wiggle-2
Wiggle Bones 1 (old):
https://github.com/shteeve3d/blender-wiggle
https://blenderartists.org/t/wiggle-2/1454788
https://blenderartists.org/t/wiggle-bones-a-jiggle-bone-implementation-for-2-8
Tutorial
Tutorial by ThatAnimatorGuy
Other Tutorials
[NSFW] The tutorials below may be “not safe for work”!