Ultistamp is a decal add-on for Blender that works with full PBR decals and ships with a library of more than 100 presets.
It can be used on its own or paired with Ultibake, a companion add-on that bakes any material with the applied decals. Documentation is included with the add-on, and a demo video is available.
Ultistamp installs as a Blender extension and is listed as extension-compatible, supporting Blender versions 4.2 through 5.1. It is distributed as an add-on under the GPL license, and its developer, the Nyetei Team, is a Blender Development Fund contributor. The add-on has recorded more than 20 sales, sits at popularity rank 2409 in the Superhive library, and holds a five-star rating from a single review.