Laigter - Normal map generator for 2d sprites.
Substance Designer - Substance Designer is a node-based non-destructive application for material authoring.
Unflattener - Unflattener is a free and open source Python module and a command line tool (unflatten.
Material Maker - Cross-platform, procedural texture generation tool.
Sprite Lamp - Sprite Lamp is a software tool to help game developers combine 2D art with dynamic lighting...
ShaderMap - Create Rendering and PBR Maps in Seconds!