Keyclick is a Mac OS X preference pane that provides adjustable audio feedback for keystrokes, mouse clicks, and the scroll wheel. Keyclick allows you to adjust the volume up or down at any time without even visiting the Keyclick Preferences Panel. Use Cmd-Shift-) for louder, and Cmd-Shift-( for softer (or define your own shortcuts). The volume is also affected by the system volume setting so it can adapt more easily to quiet or noisy surroundings.

Features:

• Provides subtle but important feedback for each keystroke recognized by the system.
• Clicks for each auto-repeated character but does not click for modifier keys.
• Clicks in real time even when the program you are using is too busy to respond.
• Assists touch typing by confirming each successful keystroke.
• Relaxes the need for visual feedback of keyboard input.
• Adjustable keyclick volume directly from the keyboard.
• Activate or mute all sounds with global hot key combination Control-Alt-Command-T.
• Optional typewriter sounds.
• Optional scroll wheel and mouse button click.
• Can exclude selected applications (such as games).
• Simple low cost solution

Requirements:
OS X 10.6+
Intel Required

Also available is:
Universal Binary version 1.3.1 for OS X 10.5-10.7