Mutator Toolbox was originally released early on in UT99's release cycle, and the most recent version of it appears to have more or less vanished off the internet after all of the major modding sites shut their doors, so this is sort of a 're-release' of version 2.0, which is a bit cleaner and more feature-filled than version 1.1, and packaged for easier installation.

This was built using version 436 (the Steam version of Unreal Tournament GOTY). I hope someone else in the community might get some use out of it!
Forsaken