Normal Brush adds a new control to Blender for adjusting mesh normals. The addon lets you change the normals of your mesh by stroking your model with a brush.
The addon supports a broad range of Blender releases, from 2.8 through the 3.x series up to 4.0, and is released under the GPL license. Alongside the superhive listing, it is also available from the developer's GitHub page. Documentation is included, and a demo video is available.
Built by kitfox.com, Normal Brush keeps to a single task: brush-based normal editing inside Blender. Its version coverage runs from Blender 2.8 up to 4.0, and it is distributed under the GPL license. On superhive it holds a five-star rating from a small number of reviews.