HyperCare!

Xenus Link Sleuth checks Web sites for broken links. Link verification is done on "normal" links, images, frames, plug-ins, backgrounds, local image maps, style sheets, scripts and java applets. It displays a continously updated list of URLs which you can sort by different criteria. A report can be produced at any time.

DRKSpider is an open source website crawler (sitemap generator) and link checker.

Check all internal links, redirects and file references (e.g. images)spell check, see how calculated link juice flows, validate HTML and CSS, custom search all pages for text/code

If you need more features than only a website link checker - such as XML sitemap (conforming to the standard protocol), html validity, essential SEO checks such as page title, headings, meta description and keywords - then try Scrutiny.In short, Scrutiny helps you manage and improve any number of websites.

Check for broken links on any website. Links that don't work damage your search rankings and provide for a poor user experience. No downloads - just enter the name (URL) of the website you wish to check.

Link Evaluator is a Firefox extension designed to help users evaluate the availability of online resources linked to from a given Web page. When started, it automatically follows all links on the current page, and assesses the responses of each URL (link).

SenSEO is a Firefox Extension analysing on-page SEO criteria and was created by Nico Steiner.