Site Down - Site down outage and downtime reports from SiteDown.co
Down Services - Get service outage alerts in real time. Know when your favourite service is offline.
Is it Down? - Is it down can check if a website is down or is it just your PC that can not access it.
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.
Is it up? - A simple tool to check if a website or ip address is up or down.