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3 Freeware Open Source Link Checkers - Check websites for broken links

  1. LinkChecker

LinkChecker is a free, GPL licensed URL validator and site crawler.

Main Features:

  • recursive and multithreaded checking and site crawling
  • output in colored or normal text, HTML, SQL, CSV, XML or a sitemap graph in different formats
  • HTTP/1.1, HTTPS, FTP, mailto:, news:, nntp:, Telnet and local file links support
  • restriction of link checking with regular expression filters for URLs
  • proxy support
  • username/password authorization for HTTP and FTP and Telnet
  • honors robots.txt exclusion protocol
  • Cookie support
  • HTML5 support
  • HTML and CSS syntax check
  • Antivirus check
  • Different interfaces: command line, GUI and web interface



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  1. WebCheck

WebCheck is a website checking tool for webmasters. It crawls a given website and generates a number of reports. The whole system is pluggable allowing easily adding extra reports and checks.

Main Features:

  • support for http, https, ftp and file schemes
  • view the structure of a site
  • track down broken links
  • find potentially outdated and new pages
  • list links pointing to external sites
  • can run without user intervention



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  1. LinkLint

Linklint is an Open Source Perl program that checks links on web sites. It is licensed under the Gnu General Public License.

Main Features:

  • both local-file and HTTP site checking
  • cross referenced and fully hyperlinked output reports
  • the ability to check password protected areas
  • support for all standard server-side image maps
  • reports of orphan files, and files with mismatching case
  • a report of which URLs have changed since last checked
  • support of proxy servers for remote URL checking



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