Compare software

Integrity vs muffet: catalog facts
Integrity	muffet
Freemium Integrity is free; Integrity Plus ($20), Integrity Pro ($59) and Scrutiny ($149) are paid…	Free Free and open source.
macOS	Windows, macOS, Linux, Command line
Free link checker with no usage cap mentioned Native macOS app	Fast concurrent crawling Fits easily into CI pipelines
Mac only Export, search and sitemaps require a paid version	Command line only, no graphical interface Focused on links rather than wider SEO or markup checks
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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