Compare software

htmltestLinkChecker
Free

Free and open source.

 Free

Free and open source under the GPL.

Command line Windows, macOS, Linux, Command line
  • No Ruby environment needed, unlike html-proofer
  • Single Go program that also runs in Docker
  • Recursive, multithreaded crawling of whole sites
  • Many output formats including CSV, XML, SQL and sitemap graphs
  • Works on generated files, not on live dynamic sites
  • Command line only, with no graphical interface
  • Command-line only, no graphical interface
  • The PyPI release may lag behind the latest code
Downloadable app Downloadable app
Open source Open source
License not stated License: GPL
No account needed No account needed
Works offline Not stated if it works offline

Checked September 24, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.