Is It Down Right Now? - Network & Admin
IsZDown - Monitor the errors and status of the most popular websites and apps. Check whether they are down right now or not.
Is it up? - A simple tool to check if a website or ip address is up or down.
DownDetector - A simple service to tell you whether a website is down.
Is it Down? - Is it down can check if a website is down or is it just your PC that can not access it.
IsItDown RightNow - "Is It Down Right Now" monitors the status of your favorite web sites and checks whether they are down or not.