Integrity - Feature comparison of link checkers for Mac: Integrity, Integrity Plus and Scrutiny
Dr. Link Check - Broken link checker with malware and parked domain detection
Xenu's Link Sleuth - Xenus Link Sleuth checks Web sites for broken links.
LinkChecker - LinkChecker is a free, GPL licensed website validator.
Link Evaluator - Link Evaluator is a Firefox extension designed to help users evaluate the availability of online...
BrokenLinkCheck - Free Broken Link Checker / Online Dead Link Checking Tool - find bad hyperlinks