16/05/2007

• W3C Link Checker : Check links and anchors in Web pages or full Web sites
• WebLight : Efficiently generate sitemaps and check links, markup & css, maintain error free, search engine friendly, websites.
• Validator.nu : (X)HTML5 Validator
• Lemmy : Lemmy is a selfhosted social link aggregation and discussion platform. It is completely free and open, and not controlled by any company. This means t...
• The W3C Markup Validation Service : This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.