pskx
There are 2 repositories under pskx topic.
Befzz/blender3d_import_psk_psa
import mesh, skeleton, animation from psk, psa files to blender3d
skarndev/umodel_tools
A Blender add-on featuring import of Unreal Engine games static meshes and maps. It provides basic support for many UE games, while some have dedicated improved support.