Plugins for creating textures using GIMP

Homogenizer

Download: website

Menu: Filters->Enhance->Homogenize

Description: Removing directional light and shadows on the texture.

Example:

Before	After

Resynthesizer

Download: website

Menu: Filters->Map->Resynthesize

Normalmap

Download: website

Menu: Filters->Enhance->Normalmap

DDS

Download: website

Menu: File->Save As...