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AChecker vs axe DevTools: catalog facts
AChecker	axe DevTools
Free Single checks are free; automatic monitoring is a paid ACHECKS subscription.	Freemium The browser extension has a free tier; wider toolkits are paid and sold through Deque.
Web	Web, Browser extension
Checks by URL, file upload or pasted HTML Choice of several guideline sets and levels	Built on the widely used axe-core rules engine Checks run directly in the browser on the current page
Guidelines stop at WCAG 2.0 Older interface with limited explanation of fixes	Automated checks do not replace manual accessibility testing Advanced features are enterprise products sold through sales
Web application	Hosted service, Browser extension
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	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.