Apple - How can I increase the mouse sensitivity of Magic Mouse?

Here are 5 Mac utilities that alter the mouse acceleration curve, speeds, and/or add features to mice in OS X:

USB Overdrive

$20 (Shareware; Free unlimited, fully functional trial)

USB Overdrive is a popular program that works with just about any USB or Bluetooth input device. It allows users to customize mouse acceleration, scrolling, clicking, and more. You can even configure per-application settings. A new version that supports Multi-Touch in Apple’s Magic Mouse is in development and expected soon.

Version 3.0.1 compatible with 10.4, 10.5, or 10.6

SteerMouse

$20 (Shareware; Free 30 day trial)

Aside from mouse acceleration, SteerMouse offers a ton of other advanced features. Configure up to 16 buttons, modify scroll wheels/balls, and set the cursor to automatically move to a specific location on the screen when a window is activated. Support for the Apple Magic Mouse is pending.

Version 4.0.1 compatible with 10.4, 10.5, or 10.6

MouseZoom

Free

While MouseZoom does not alter the acceleration curve itself, it does let users bump tracking speeds beyond those available in System Preferences. An ideal solution? No, but it’s a free alternative that helps ease the pain.

Version 2.2 compatible with 10.1, 10.2, 10.4, 10.4, or 10.5

Mouse Acceleration

Free

This Preference Pane is based on Richard Bentley’s MouseFix – a non-user-friendly command line utility. This version, however, makes it easy to increase mouse precision and speed up mouse movement with visual aids.

Version 1.0 compatible with 10.4 or 10.5

BetterTouchTool

Free

This is a brand new piece of software that just came to be within the past couple weeks. It’s in beta and still buggy, but it packs some nice features and is in active development. I can’t say for sure whether it customizes OS X’s acceleration curve or just supercharges the maximum tracking speed. The real reason to give it a shot, though, is if you have a Magic Mouse or MacBook that supports Multi-Touch gestures. BetterTouchTool lets users assign specific actions to advanced finger gestures and can simulate a middle-click. It can even bring the Mighty Mouse’s Exposé functionality to the Magic Mouse.

Compatible with 10.6

ControllerMate

$15

ControllerMate is a controller programming tool that allows you to customize the behavior of your HID devices — keyboards, keypads, mice, trackballs, joysticks, gamepads, throttles, among others. ControllerMate’s philosophy is to be as flexible as possible, to provide a set of basic programming tools, and to allow the user to combine those tools in an endless variety of ways.

SOURCE: This was posted on Nov 24th, 2009 at MacYourself.com. Some utilities are probably updated now. I’ve used USB Overdrive with certain success.