Are My Sites Up
Pingdom
Pingometer
Site24x7
SiteUptime
UptimeRobot
Monitis
Service Uptime
Is It Down Right Now?
Site Down
Is it Down?
UPDOWNtoday
Is it up?
IsThisSiteDown.org
DownDetector
Pingdom
Are My Sites Up Is It Down Right Now?Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
Site Down - Site down outage and downtime reports from SiteDown.co
Pingometer - Pingometer is a service that monitors the uptime, downtime, and performance of websites. Get 24/7 monitoring - sign up for your FREE account today!
Is it Down? - Is it down can check if a website is down or is it just your PC that can not access it.
Site24x7 - Site24x7 offers both free & paid website monitoring services. Monitor websites remotely and receive instant email/sms alerts if your website becomes unavailable. View uptime & performance graphs of your website monitors.
UPDOWNtoday - UPDOWNTODAY allows you to check whether the website is down or not.