lets you spot the differences between two files: source code, HTML code, text, or other data.

offers a systemwide menu that displays the battery level of your Magic Trackpad, Magic Mouse, Wireless Keyboard, and, on a laptop, internal battery.

is a file-compression app that works silently in the background. You won't even notice it's doing its thing--except that the amount of free space on your Mac's drive has magically increased.

lets you set stopwatch, countdown, and alarm-clock alarms, as well as export alarms to your calendar or other apps to stay organized.