BrokenLinkCheck - Free Broken Link Checker / Online Dead Link Checking Tool - find bad hyperlinks
Treo - Treo is the page speed monitoring tool that helps your customers from obtaining a faster web experience.
Dead Link Checker - Check for broken links on any website
Watchman Monitoring - Watchman Monitor is a powerful and easy-to-use, system monitoring & reporting tool.
LinkChecker - LinkChecker is a free, GPL licensed website validator.
ApplinX - Modernize core applications in just days without changing existing code.