Budo3D

The Blueprint Importer & Cropper Tool for Blender pairs a Blender addon that auto-sets up reference images with a standalone cropping app, built for blueprint-based modeling of vehicles, architecture, and mechanical subjects.

Variation System is a Blender addon from Budo3D for managing material variations on a single object. It lets you swap between material setups, copy variant collections between objects, and export textured meshes as .fbx files.