Material Maker
This is a tool based on Godot Engine that can be used to create textures procedurally. It can also be used as a Godot addon (but there's no good reason for not using it as a standalone tool).
Its user interface is based on Godot's GraphEdit node: textures are described as interconnected texture generators and operators.
Download
On Windows, you can also install Material Maker using Scoop:
scoop bucket add extras
scoop install material-maker
Documentation
Screenshot
License
Copyright (c) 2018-2020 Rodolphe Suescun and contributors
Unless otherwise specified, files in this repository are licensed under the MIT license. See LICENSE.md for more information.