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AccessMonitor vs Pa11y: catalog facts
AccessMonitor	Pa11y
Free Free public service.	Free Free and open source.
Web	Self-hosted, Command line
Checks against WCAG 2.1 Gives a single 0 to 10 quality score	Command-line tool for quick one-off accessibility checks CI tool for testing a list of pages in builds
Interface is primarily in Portuguese Automated checks cannot replace a manual accessibility review	Automated checks catch only part of all accessibility problems The dashboard requires running your own server
Web application	Downloadable app, Self-hosted
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
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.