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IBM Equal Access Accessibility Checker vs ARC Toolkit: catalog facts
IBM Equal Access Accessibility Checker	ARC Toolkit
Free Free and open source, published by IBM on GitHub.	Free Free to install from the Chrome Web Store.
Browser extension, Command line	Browser extension
Same rule engine in the browser and in automated builds Integrations for Cypress, Karma, Vitest and Java	Runs inside the browser on the current page Uses TPGi's ARC rules engine
Automated checks cannot catch every accessibility problem Build integrations need some setup in a test suite	Checks one page at a time Automated checks do not replace manual testing
Downloadable app, Browser extension	Browser extension
Open source	Closed source
License not stated	License not stated
Not stated if an account is 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 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.