These tools crawl websites to find "broken" hyperlinks that point to non-existent pages etc.
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   2bone Link Checker
      in 2 toolboxes 2bone Link Checker
      in 2 toolboxes
 add to my toolboxFree Online Link Checker 
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   Dead-Links.com
      in 3 toolboxes Dead-Links.com
      in 3 toolboxes
 add to my toolboxFree link-checker limited to 25 pages per domain and 150 external documents. Higher limits if site has a link to Dead-Links.com. 
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   LinkTiger
      in 1 toolbox LinkTiger
      in 1 toolbox
 add to my toolboxLinkTiger is a free online broken link validation service. 
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   Text Link Checker Tool
      in 2 toolboxes Text Link Checker Tool
      in 2 toolboxes
 add to my toolboxLink Exchange tool; doesn't check for broken links - rather looks at outgoing links and flags those that may be questionable from a taste or spam point of view. 
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   W3C Link Checker
      in 1 toolbox W3C Link Checker
      in 1 toolbox
 add to my toolboxAccepts URLs to check for broken links 
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   Web Developer Extension
      in 37 toolboxes Web Developer Extension
      in 37 toolboxes
 add to my toolboxThe Web Developer extension adds a menu and a toolbar to the browser with various web developer tools. It is designed for Firefox, Flock, Mozilla and Seamonkey, and will run on any platform that these browsers support including Windows, Mac and Linux. 
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   Xenus Link Sleuth
      in 7 toolboxes Xenus Link Sleuth
      in 7 toolboxes
 add to my toolboxFind broken links on web sites 







