CGCocktail

Masknode is a set of custom node groups for Blender from CGCocktail that procedurally generate black-and-white textures for adding detail to objects. Installing the add-on adds a 'Mask' category to the shader editor's Add menu.

Import&Export is a Blender add-on from CGCocktail that lets you import, export, and append files directly from the 3D viewport's Add menu (Shift+A), supporting a range of common 3D file formats.