Website URL Link Checkers
Online Broken Link Checker
BrokenLinkCheck.com is a free online web-site validator / integrity checker / problem detection tool that can check your web-pages for broken / dead links, validate, find, and report bad hyperlinks if any found.
W3C Link Checker
This Link Checker looks for issues in links, anchors and referenced objects in a Web page, CSS style sheet, or recursively on a whole Web site.
Dr Link Check
Free link checks are limited to 1,000 links per website.