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Is there any desktop utility for OS X that would periodically monitor a (non-osx) server and display a status icon? Something as simple as attempting to visit a URL every 5 minutes and turning red if it does not respond would be enough, although anything more detailed is interesting too.

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Do you only intend to ever be watching 1 site? And all you want to know is reachable or not? – Jason Salaz Feb 22 '11 at 1:28
Also: What medium are you monitoring? Is ping enough? Are you checking accessibility of a website? SSH? – Jason Salaz Feb 22 '11 at 1:35
up vote 7 down vote accepted

GeekTool (free)

GeekTool will let you set up a simple icon or show more detailed information, embedded in or floating over your desktop, based on whatever programming you want.

If you can write a script to check the server and return either a binary status or more detailed information, GeekTool is the way to display it.

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That does the trick, esp. since I can set it always on top and then place it on top of the menu bar. – kdt Feb 22 '11 at 13:30

ServerSiren ($15 with 10 day free trial)

With Server Siren, server downtime is a thing of the past. It runs as a menu bar item, so a quick glance is all it takes to see that everything is A-OK. If a server goes down, Server Siren alerts you immediately so you can fix the problem and get your site up and running again.

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Unfortunately this one doesn't work with OS X >= 10.5 (I'm on Snow Leopard) – kdt Feb 22 '11 at 13:21

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