SiteCheckerTool.com - Website Analytics & Tools
LinkChecker - LinkChecker is a free, GPL licensed website validator.
AnalyzeSiteTool.com - Website Analyzer Tools
DRKSpiderJava - DRKSpider is an open source website crawler (sitemap generator) and link checker. Features:
SiteAuditTools.com - Website Audit & Analysis Tools
Dead Link Checker - Check for broken links on any website