A utility which unfucks Mac OSX's general hatred of third party mice and touchpads. Forces OSX to treat them just like Apple's own hardware. Stable, still maintained, regular updates released. Even has its own OSX auto-updater to keep everything up to date. Fixes scrollwheels and two-finger scrolling, too!
Github: https://github.com/noah-nuebling/mac-mouse-fix
Seriously. This utility saved my sanity at work.