GRS Studio

UV Retopo is a retopology tool for Blender that lets you build flat quad-topology on a 2D plane and mathematically project, snap, and stitch it onto a 3D highpoly target.

GRS Game Tools: Auto-Collisions & Smart FBX Exporter is a Blender add-on that pairs a collision generator with a smart FBX exporter in the N-Panel, built for preparing game assets for Unreal Engine.