SmoothCursor is a status bar application that provides separate controls for customizing the mouse and trackpad accelerations — It is the perfect tool to use in combination with drawing applications and FPS games!

System Notifications
SmoothCursor will display a system notification every time a different profile is activated using Growl or Mountain Lion's (10.8) Notification Center (This feature is optional and can be disabled by the user.)

User-definable Hotkey
One of the most relevant features in version 2.0 is the ability to alternate between 2 profiles using an user-definable HotKey.
Alternating between acceleration profiles can be accomplished in 2 different ways:
• Mode 1: Activates alternative profile after Hotkey is released
• Mode 2: Activates alternative profile while Hotkey is pressed

Features:

• Streamlined user interface always available from the status bar
• Supported acceleration ranges: normal acceleration (>0 to 6), no acceleration (0), inverse acceleration (-6 to <0)
• Automatically start at login (user-definable)
• Special enforce mode: preserves user acceleration settings even if some other processes try to change them

Requirements:
OS X 10.7+
64-bit Intel