Modman is a very useful software, with many features.
Main features:
- MOD MANAGER: this utility MANAGE mods/addons installation automatically by ONLY ONE CLICK
- MOD MAKE: PACKAGE yours mods/addons in order to make it MODMAN compliant
- EXTURE BROWSER (ie: CDDS Explorer): browse cat files (like .cdds, .gtl, .gtr file) and extract/replace textures