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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...

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 …

EZ Website Monitoring provides keyword rank tracking, uptime monitoring, and error checking for your website.

BinaryCanary.com helps individuals, businesses, associations and agencies that want a consistent, result-driven web presence. With the state of the global recession, BinaryCanary.com's “one-minute...

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

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...