Scroll Reverser is a free app for Mac OS X that reverses the direction of scrolling. You can use it with OS X 10.5 and OS X 10.6 to make your scrolling match the 'natural scrolling' in OS X 10.7.
You can also use it with OS X 10.7 to customise scrolling behaviour beyond what is possible in system preferences, for example to reverse the trackpad but not the mouse.
Scroll Reverser is small, simple and efficient and works with all mice and trackpads with a scroll wheel or scroll gesture support, including MacBook trackpads, Magic Trackpad, Magic Mouse, and Mighty Mouse.
- Brand new preferences window to replace the clunky old menu
- Important fixes for compatibility with OS X 10.10.2 Yosemite update
- Adds AppleScript support for turning Scroll Reverser on and off
- OS X 10.7 or later