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IBM Equal Access Accessibility Checker vs Sa11y: catalog facts
IBM Equal Access Accessibility Checker	Sa11y
Free Free and open source, published by IBM on GitHub.	Free Free and open source.
Browser extension, Command line	Web, Self-hosted
Same rule engine in the browser and in automated builds Integrations for Cypress, Karma, Vitest and Java	Shows issues in place with plain fix instructions Over 80 checks with rules you can switch off
Automated checks cannot catch every accessibility problem Build integrations need some setup in a test suite	Aimed at content issues, not a full code audit Needs to be added to a site or CMS by a developer
Downloadable app, Browser extension	Self-hosted
Open 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 24, 2026

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