Endertainer007

IK-FK Snapping Tool is a Blender add-on that matches poses between IK and FK controls. It snaps from IK to FK and FK to IK with a button press, and saves reusable snapping presets.

Additional Batch Rename is a Blender add-on by Endertainer007 that adds batch rename operators for modifiers, constraints and vertex groups. Access it from the right-click menu in Object, Edit, or Pose Mode.