Compare software

IBM Equal Access Accessibility Checker vs Pa11y: catalog facts
IBM Equal Access Accessibility Checker	Pa11y
Free Free and open source, published by IBM on GitHub.	Free Free and open source.
Browser extension, Command line	Self-hosted, Command line
Same rule engine in the browser and in automated builds Integrations for Cypress, Karma, Vitest and Java	Command-line tool for quick one-off accessibility checks CI tool for testing a list of pages in builds
Automated checks cannot catch every accessibility problem Build integrations need some setup in a test suite	Automated checks catch only part of all accessibility problems The dashboard requires running your own server
Downloadable app, Browser extension	Downloadable app, 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 23, 2026

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