UPDOWNtoday - UPDOWNTODAY allows you to check whether the website is down or not.
IsItDown RightNow - "Is It Down Right Now" monitors the status of your favorite web sites and checks whether they are down or not.
IsThisSiteDown.org - Free tool to check whether a site is down just for you, or for everyone.
Ruler for Windows - It's a screen ruler for Windows.
Is it Down? - Is it down can check if a website is down or is it just your PC that can not access it.
Is It Down Right Now? - Network & Admin