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That's pretty much it, I have a web app online and I want a web app that can monitor the status of my app and can reach me (email, sms, or what evere) when my site is down.

I would be a plus if it could also check for my WCF services, and a big plus if it's also free :)

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closed as off topic by Eight Days of Malaise, Al E., ChrisF Jan 7 '13 at 23:09

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7 Answers 7

webmon.com (not free though). But it supports realtime availability & performance monitoring and allows you to setup custom triggers and realtime dashboards.

Disclaimer: Sysops at Webmon.

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Please can you ensure that if you are affiliated with this service it is made clear in your answers. Over promotion may result in the community marking your answers as spam so please be careful. Thanks –  Barry Jan 7 '13 at 8:30

I use Woopra for monitoring my website

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Try AlertFox, they have a good free plan: http://www.alertfox.com/free-website-monitoring/

You say you run a web app (as opposed to a simple static site) - in this case the Alertfox multi-step monitoring (aka transaction monitoring) feature is really useful. You can record a sequence in Firefox and AlertFox replays this test inside the web browser over and over again. It sends you a detailed error message and browser screenshot(!) if something goes wrong. One such test is included in the free account!

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"Was it up?" emails you when your site is down, it's free, simple and works.

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This works great. –  Muhammad Usman Oct 24 '10 at 23:25

I personaly like http://site24x7.com/ It has basic free monitoring and cool advanced features

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Pingdom is free for basic site monitoring.

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Check out http://www.siteuptime.com/

They have 3 different plans to choose from from free to $10 a month. The free plan comes with email alerts and checks your site every 30 or 60 minutes. If you need more frequent checks you could upgrade to either the $5 or $10 a month packages.

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