(September 27, 2017)
TexMex is a WAD management tool for Quake-based games and GoldSrc. With it, you can open up WADs and BSPs, see their textures, and export them out to other formats. It supports a variety of texture formats, including Quake lightmaps and mipmaps, Heretic II textures, Quake II WALs, SiN SWLs, PCX, TGA, BMP, and JPG.
TexMex also allows you to create new WADs and delete textures from existing ones, meaning only the textures you need are loaded into your level editor or shipped with your map.