Cody Winchester writes:
Hello BlenderNation!
I wanted to share my first addon released through BlenderMarket.
Shape Key Manager Pro is a Blender Addon designed to simplify the process of duplicating and mirroring shape keys and drivers on a character.
It allows you in less than a minute to duplicate and mirror all shape keys on 1 side of the mesh to the other and retarget the drivers for those shape keys to the correct mirrored bone.