This script is very helpful in controlling the rhythm of the animation. Create overshoots and just adjust the spacing.

Update Reference Layers + Point Bindings. Accessible via button/keyboard shortcut, and remembers settings (ver 1.10)

This tool allows you to transform parts of the rig without breaking its actions.

Utility file needed for scripts by Lukas Krepel, Frame Order

help to create break down keyframes for bone or layer transform

Link mesh layers with ability to turn the link on and off

Multiple buttons combined to a tool for manipulating keys in character animation.

Mix two smartbones or tune one smartbone without opening its action