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ARC Toolkit vs ANDI: catalog facts
ARC Toolkit	ANDI
Free Free to install from the Chrome Web Store.	Free Free to use, provided by a US government agency.
Browser extension	Web
Runs inside the browser on the current page Uses TPGi's ARC rules engine	Shows the accessible name a screen reader should announce Nothing to install beyond a bookmark
Checks one page at a time Automated checks do not replace manual testing	Can be blocked by a page's Content Security Policy Desktop browsers only
Browser extension	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Needs internet
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.