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