Free Web Site Monitoring

ServerPulse
ServerPulse checks your website/server for availability around the clock and sends alerts. Monitors any service port you'd like: Web, email, FTP, MySQL - anything. No hidden costs or strings attached.

Link Checker Pro
Link Checker Pro is the leading solution for website analysis and the detection of broken and other problem links. Link Checker Pro combines powerful features and an easy to use interface.

Glowbe.com Location Counter and Mapper
Provides free, location mapping of visitors to your website. Pinpoint your guests and map them worldwide.