Users interested in Gimp for dds files generally download:
This is a plugin for GIMP. It allows you to load and save images in the Direct Draw Surface (DDS) format. Load/save DDS files, optionally using DirectX texture compression (DXT) . Optional automatic mipmap generation when saving. Load cube map faces and volume map slices into separate...
Additional suggestions for Gimp for dds files by our robot:
file naming conventions for .dds...DDS export (e.g., Photoshop with plugin, GIMP...source