Features:

++ Quick and precise raycast-based Decal insertion ++
++ Automatic material matching, parenting, normal transfer and collection creation ++
++ Unlimited decal libraries + flexible asset loader layout ++
++ Instant decal creation of all types ++
++ Quickly adjust height, decal mesh or UV rotation and much more using the convenient modal adjust tool ++
++ Enforce default settings scene-wide and change them quickly using the panel ++
++ Use decals on flat surfaces and project them on curved surfaces ++
++ Slice decal panel lines boolean-style ++
++ Parallax adds convincing depth to normal mapped decals, now in real time utilizing Blender’s Eevee ++
++ Retain sharp details at all scales, independent of texture resolution, via UV-less object based detailing ++
++ Take advantage of decals being objects, by using modifiers like mirror ++
++ Add Decals while editing groups in GroupPro ++
++ Hide Decal materials (incl. in Batch Ops and Hard Ops) and textures ++
++ 108 Decals included ++
++ Best documentation in the business ++

Link: http://gumroad.com/l/DECALmachine