ht://Check is more than a link checker. It's particularly suitable for checking broken links, anchors and web accessibility barriers, but retrieved data can also be used for Web structure mining. Uses a MySQL backend. Derived from ht://Dig.
wuhkag is a Web application written in PHP for evaluating Web sites accessibility and publishing an HTML accessibility policy. It supports W3C WCAG 1.0 and requires PHP 4; future developments include XML and EARL output support, with XSL i18 policies