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LinkChecker vs Dead Link Checker: catalog facts
LinkChecker	Dead Link Checker
Free Free and open source under the GPL.	Freemium Manual checks are free; scheduled automatic checks require a paid subscription.
Windows, macOS, Linux, Command line	Web
Recursive, multithreaded crawling of whole sites Many output formats including CSV, XML, SQL and sitemap graphs	Free manual checks of whole sites or single pages Can check multiple sites in one run
Command-line only, no graphical interface The PyPI release may lag behind the latest code	Automated checking is paid Scheduling and multi-site reports need an account
Downloadable app	Web application
Open source	Closed source
License: GPL	License not stated
No account needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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