uptimerobot

StatusCake enables the visitor to track unlimited websites for free and get alerts when the site is down or having trouble. StatusCake also tracks performance over time so a webmaster …

Pingoscope will carefully monitor your website and alert you instantly if it goes down. Unlimited email SMS, Skype, Phone Call notifications, historical response time data, one minute check intervals data …

Provides free real time 24/7 website and server monitoring from geographically distributed servers with personalized Ajax interface, server performance testing, uptime reporting, traffic analysis and alarm...

PushMon is a new kind of cloud-based monitoring system. Instead of checking public facing servers on a regular basis, PushMon will wait for pings from the objects being monitored. These …

Track web page changes in any web page daily for free users, every 30 mins for paid users - no RSS or Atom required. Receive notifications via Email, Notifo, Instant …

Follow That Page sends you an email when your favorite web pages have changed.

Website Monitoring from a Global Perspective. Easy, fast and effective web server monitoring, server monitoring and website monitoring service.

The website monitoring service that doesn't suck. Get an email when your website goes down. Statuses are available by email, web, RSS feeds and widgets.

TrackEngine allows users to monitor any websites and to be alerted of new content on any devices.

Monitor 2 websites with 15 min interval for FREE! Checks your website every 15 minutes. Get trouble alerts by email or sms. Instant alert through SMS, email notifications, tweet, feeds …

Versionista was designed for the rough-and-tumble world of today's Web, where subtle edits can offer actionable tactical advantage. * Monitor entire Web sites and receive e-mail alerts when changes...

Automatically check your website's uptime, performance & quality with Simonbot. Be the first to know if something is going wrong with your website, get results, analyse them and find bottlenecks. …

WebSitePulse is a leading provider of advanced, independent and remote monitoring services that enable clients to increase the efficiency of their mission-critical e-business operations, and to reduce their...

Monitorius is simple uptime monitoring service for all your needs - website monitoring, server monitoring, ping monitoring made really easy.

Snapmon lets you monitor your servers to make sure everything is running. When a server goes down, you can be notified by SMS Text Message, Email, AIM, or Google Talk.