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PowerBlock intercepts presses of the power button and optionally runs an AppleScript. This is handy on the MacBook Air where the power button is now a key on the keyboard and can be accidentally pressed.

By running an AppleScript when the power button is pressed, you can setup your system to immediately shutdown, restart, sleep, or eject a DVD. This is great for headless servers.

Known Limitations: PowerBlock does NOT prevent a hard shutdown if you hold the power button for more than 4 seconds.

What's New

Version 1.2:

Powerblock is not compatible with OS X 10.9 due to changes in the power system.

  • IMPROVED: Added more examples to the AppleScript.
  • IMPROVED: Inform user when there's an error in the AppleScript.
  • IMPROVED: Hide the splash screen by checking "Hide" in System Preferences > Users & Groups > Login Items.
  • IMPROVED: 1024x1024 application more...


OS X 10.5 to OS X 10.8.5

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PowerBlock User Discussion

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lamontDakota Member IconReview+194

"Known Limitations: PowerBlock does NOT prevent a hard shutdown, if you hold the power button for more than 4 seconds."

The developer makes this sound like a bug. It looks like a feature, to me! Sometimes, you *want* to be able to do a hard shutdown. What would be the point of blocking that? He should say, IMO, "Special Feature: ..."

Reply0 replies
Version 1.2
Grrr Member IconReview+1

Didn't use the Script, just left the app running. Love this app, does just what I need.

Reply0 replies
Version 1.1
retani Member IconReview+1

This nifty little program does exactly what it is supposed to do. By using Apple Script, it enables you to trigger any action you intend when the power button is pressed, including more complex ones. This makes it useful for professionals, too. I used it on a Mac Mini in a museum installation so it can easily be switched on and off by the staff using just the power button. Minimal understanding of Apple Script is required (thus ease of use 4 of 5).

Reply0 replies
Version 1.1
user icon+79
Version 1.1
> 5 4


Current Version (1.x)


Downloads 1,825
Version Downloads 1,138
Type Utilities / System
License Free
Date 05 Aug 2013
Platform OS X / PPC 32 / Intel 32
Price Free
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