Uefy 2.0 is an addon that makes it easy to use Blender’s Rigify system for game engines like UE4.
The new version Uefy 2.0 (Pro Edition) has replaced the old script now called Uefy Script (Lite Edition).
The Pro Edition has a lot of new functionality. It is a good deal easier to use with better workflow and capability. Be sure to check more feature details here.