They have a free version and a paid version. Even the paid one is not expensive at $100+, but the free one is quite adequate for simple monitoring.
>>>Does anyone know of a decent (prefreably freeware) software than can check to see if my website is online and if not email me?
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>>Check out http://www.west-wind.com/webmonitor/ I don't know if this works for non-west-wind apps, too, but that's what I use (the limited free version...)
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>Is Web Monitor free?