Sanctus Library – Procedural Materials v3.0 for Blender Free Download
The Decal Tool (Blender v3.5+). Sanctus Library has a non-destructive real time Decal Placing Tool with currently 352 images.
Emission can be added to any decal using the alpha channel
The included BAKING TOOL also bakes decals. You can also use your own image files as decals