We took a look at BetterTouchTool last year and covered its usage with a Magic Mouse and a MacBook trackpad. As you would expect, this versatile utility can also be used to customize the functionality of the Magic Trackpad. The app features over 50 multi-touch gestures including taps, clicks and swipes for one to five fingers. Each gesture can be customized to perform a wide range of predefined actions or assigned to a custom desktop shortcut.
You can even create your own gestures and add button commands (fn, ctrl, command, option) to each one. Besides quadrupling the number of available gestures, these buttons can also be used to prevent accidental activation of a gesture by requiring you to deliberately press a button prior to clicking, tapping or swiping. Gestures and actions are the focus of this application, but it has a few neat tricks up its sleeve that let you snap and resize a window like Windows 7 as well as control the trackpad speed and sensitivity.
Combine this tool with a Magic Trackpad and you can supercharge the input methods for your iMac, Mac Pro or Mac mini. If you have a Magic Mouse and a Magic Trackpad, you may want to check out BetterTouchTool. The unique ability of this application to assign actions to tappable hotspots around the perimeter of the trackpad lets you duplicate the functionality of the Magic Mouse and keep all the multi-touch gesture goodness that comes with the Magic Trackpad.
BetterTouchTool is available for free from boastr.net.