Compare software

muffet vs Xenu's Link Sleuth: catalog facts
muffet	Xenu's Link Sleuth
Free Free and open source.	Free Free to download and use.
Windows, macOS, Linux, Command line	Windows
Fast concurrent crawling Fits easily into CI pipelines	Checks links, images, scripts and style sheets Re-checks failures and reports redirects
Command line only, no graphical interface Focused on links rather than wider SEO or markup checks	Windows only, with no plans for other platforms Dated interface and limited development
Downloadable app	Downloadable app
Open source	Closed source
License not stated	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 October 2, 2026

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