Bought this script last year with intentions to develop the script and sell copies of it to make some passive income but can't find the time to actually get to that point.
http://serverti.me/source/
basically it runs off a cron job and emails you if your server website is down.
it is basically what you see is what you get.
The domain is hosted at namecheap so it's a free push to your account. And the files will be zipped up and sent to your email account.
I paid $50 for the script plus the domain selling it for $40