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Cuckoo brings customizable clock chimes to your Mac. Play a tone on the hour. Or on the half-hour, or any combination of five-minute intervals. Use one of Cuckoo's built-in beeps, or any of your Mac's installed sounds, at a customizable volume.

What's New

Version 1.2.5:
  • Support .caf (Core Audio Format) chime sounds.
  • Fixed a bug causing the CuckooChimeAgent to crash when checking for updates in certain situations (while the network is unavailable or if the cookies database is corrupt).


Mac OS X 10.4 or later

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Cuckoo User Discussion

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moble Member IconReview+1

It uses 10% of my processor for a minute before each chime, and randomly at other times.

It's also a waste of money. With a little more time on my hands, I just installed a simple mp3 player and use crontab (built in on Macs) to chime every 15 minutes between 9AM and 5PM. This is much easier, faster, and cheaper if you can google crontab and are willing to install mpg123 or something similar.

Here's my crontab:
0,15,30,45 9-16 * * 1-5 /opt/local/bin/mpg123 /Users/[YourNameHere]/Library/PreferencePanes/Cuckoo.prefPane/Contents/Resources/Sounds/Pure\ Cuckoo.mp3

Reply1 reply
Version 1.2.5

Actually, you need a backslash in front of a space in file names. It evidently got deleted by the website. That should be "Pure[backslash] Cuckoo.mp3".

Laraine Member IconReview+46

Aw! I reckoned I didn't need this because OS X (Tiger) can tell me the time every hour. (It's fairly easy to get used to a sound but a voice is hard to ignore). However, I downloaded Cuckoo and its bong sound reminds me so much of the clock chime I created from a file I downloaded in the days of OS 9 that it reminds me how much I miss it. Cuckoo is a very nice piece of software and it's good to see the developer isn't greedy. Many "small" pieces of shareware are far more expensive than they should be, but the price of Cuckoo seems about right. I've given it only four points for features because I would like to see at least one set of proper chimes (Westminster, for instance) added to it, to be used along with the "bong" sound, so I can turn my Mac into a real (if rather strange-looking *G*) long-case clock and drive everybody else in the house absolutely bananas! They will wonder how come the clock in the living room has moved to my office.

Reply0 replies
Version 1.2.2
Sajdak70 Member IconComment+24

Simple and nice! I like it.

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Version 1.2.2
S p l a t ! Member IconComment+12
S p l a t !

very nice "pane"...

Reply0 replies
Version 1.1.1
Gabrieler Member IconComment+0

I missed the clock chime from the OS 9 days. Glad to see it coming back. Thanks!

Reply0 replies
Version 1.0.2
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Current Version (1.x)


Downloads 9,029
Version Downloads 1,776
License Shareware
Date 23 Apr 2009
Platform OS X / PPC 32 / Intel 32
Price $6.00
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