A while back I thought up, but never implemented, a plan to develop a free web site uptime monitoring service. Basically, I spent a few hours thinking about features, wrote a few dozen lines of code and bought a smart domain name. It would’ve been great, seriously — there were other services out there but none that offered the sort of thing I was planning.
I’m still kind of disappointed that I didn’t follow through with it but recently I found something that ticks most of the boxes that I was interested in, and plenty more besides. Going by the slightly ungainly name of mon.itor.us, you get plenty of neat options for keeping track of your site’s responsiveness, several types of notification (including SMS if you need it) – and they even send you a weekly summary report. The basic service, which will probably be fine for most people, is ad-supported and free.