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