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AccessMonitor vs AChecker: catalog facts
AccessMonitor	AChecker
Free Free public service.	Free Single checks are free; automatic monitoring is a paid ACHECKS subscription.
Web	Web
Checks against WCAG 2.1 Gives a single 0 to 10 quality score	Checks by URL, file upload or pasted HTML Choice of several guideline sets and levels
Interface is primarily in Portuguese Automated checks cannot replace a manual accessibility review	Guidelines stop at WCAG 2.0 Older interface with limited explanation of fixes
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is 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.