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Sa11y vs IBM Equal Access Accessibility Checker: catalog facts
Sa11y	IBM Equal Access Accessibility Checker
Free Free and open source.	Free Free and open source, published by IBM on GitHub.
Web, Self-hosted	Browser extension, Command line
Shows issues in place with plain fix instructions Over 80 checks with rules you can switch off	Same rule engine in the browser and in automated builds Integrations for Cypress, Karma, Vitest and Java
Aimed at content issues, not a full code audit Needs to be added to a site or CMS by a developer	Automated checks cannot catch every accessibility problem Build integrations need some setup in a test suite
Self-hosted	Downloadable app, Browser extension
Open source	Open source
License not stated	License not stated
No account needed	Not stated if an account is 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.