Mods/Maps managing tool.
I end up with a lots of mods when joining modded games, half of them i don't know what they do or if i actually use them (also mod dev making 10 copy of the same mod without any description make it hard to find the ones you actually need).
For maps i end up with 10 versions of seton's/gap/crater cause each time someone is not happy and move a rock a single inch and create another map. I have a hard time knowing which one are the one i play and the one who are just redundant and useless