Check for broken links in web sites.

• 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
• restrict link checking with regular expression filters for URLs
• proxy support
• username/password authorization for HTTP, FTP and Telnet
• honors robots.txt exclusion protocol
• Cookie support
• HTML5 support
• a command line and web interface
• various check plugins available, eg. HTML syntax and antivirus checks.

See doc/install.txt in the source code archive. Python 2.7.2 or later is needed. It doesn't work with Python 3 yet, see #40 for details.

pip install linkchecker should NOT be used for now, as it will install the old version of linkchecker. See #4.

Execute linkchecker http://www.example.com. For other options see linkchecker --help.