Final Countdown

Final Countdown is a Cocoa application that gives you the possibility to start as many timers as you like. A timer can be a standard countdown for a user-defined number of days-hours-minutes-seconds or a countdown to a user-defined date (day-month-year and hour-minutes-seconds). When the timer fires, you can choose to be notified by a beep or an alert sheet, to launch an app or a script or to shut down your computer.

Version 1.7:

• Added automatic hiding of a timer window when FinalCountdown is in background.
• Added "Just play sound" action.
• Added "Shut down your Mac action".
• Added the ability to delay the repetition of an automatically repeating timer.
• Added the ability to show remaining time in an independent window.
• Added the ability to automatically start a timer when it's loaded from file.
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Requirements

Mac OS X 10.1 or later

*Previously available here