Features:

the rig config asset is editable you can make it from the source skeleton
no need to set rig config for source skeleton, the tool is creating the rig config from the source skeleton and set it automatically
with the ghost pose option no need to guess the pose you are seeing it
modify pose is more clear by the toolbar menus
all retarget process is in one single window, no need to go here and there
easy bone mapping by just clicking on bone visuals Version: 5.2 Home Page: https://www.unrealengine.com/marketplace/en-US/product/animation-retarget-toolkit