IK Control Helper
"Adds custom attributes to any dummy that parents an IK chain. Custom Attributes include Swivel Angle. Show Trajectory. Dummy Size and a quick jump to the IK chainâ€™s motion panel.
Features Less jumping around the interface or dependence on manipulators. Edit Position and Swivel Angle from one single dummy object. Have Position and Swivel Angle together in the Track View for easier editing and a cleaner UI. Convert animation to and from dummy"