LinkChecker - LinkChecker is a free, GPL licensed website validator.
SiteCheckerTool.com - Website Analytics & Tools
Dead Link Checker - Check for broken links on any website
A1 Website Analyzer - Analyze websites and save data into XML, CSV etc. Extract data about internal linking and importance calculations, file sizes, download times, HTML validation errors etc. across entire websites.
Pulno - SEO Audit and Website Analysis. Pull up your SEO.
SEO PowerSuite - Get all SEO tools in one pack - download free edition of SEO PowerSuite and get top 10 rankings for your site on Google and other search engines!