Why? Well a few days ago I really wanted to re-target some mixamo animations but I found all the free/cheap options didn’t currently support Blender 5. Also I really just wanted something simple and easy to use.
So I made one. You just import your fbx, scale the mixamo rig to be the same size, pick your source and target rig then hit Retarget. If it looks good, hit bake, you’re done (for FK transfer).
Just a small update. I added finger tracking (not sure how useful that actually is, but it’s there now). I also decided to enable the Rigify mode switcher to work outside of pose mode (though you need to change frames or something for it to actually re-evaluate the controls) and I fixed a small bug where it wasn’t restoring your Rigify mode when disabling Re-target mode.