MagicPrefs is a free menubar application for OSX which aims to improve the functionality and configuration options of the Apple Magic Mouse. It features the ability to bind a variable number of finger clicks and taps to functions like Middle Click, Hold Down Both Mouse Buttons, Spaces, Expose, Dashboard etc. Tap Sensitivity implements a advanced algorithm that impacts a number of factors used to determine taps , all controllable by a single slider. Tracking Speed adds the ability to increase the maximum available speed by a extra 25%. And to top it all off it features a real-time display of the fingers touching the surface of the mouse that you can enable to test and monitor the way the mouse sees your input.
I love my Magic Mouse, but was was disappointed by how few things it can do with Apple’s built-in driver. This looks like a great addition.