We have told you about a free service called Montastic that helps you monitor website uptime as well as a really handy desktop website monitoring tool that will help you monitor websites as well as automatically reboot your servers when it has a downtime.
If you are a Google Desktop user, there are quite a few gadgets that will help you monitor your website from your desktop. Here is a list of the gadgets you can download and start monitoring websites from your sidebar or even as floating gadgets.
Free Desktop Website Monitoring Google Gadgets
So download one of these gadgets and keep a eye on your website, right from your desktop.