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ARC Toolkit vs Accessibility Insights: catalog facts
ARC Toolkit	Accessibility Insights
Free Free to install from the Chrome Web Store.	Free Free and open source, published by Microsoft.
Browser extension	Windows, Browser extension
Runs inside the browser on the current page Uses TPGi's ARC rules engine	FastPass catches common issues in a few minutes Guided assessment against WCAG 2.1 AA
Checks one page at a time Automated checks do not replace manual testing	Web extension targets Chrome and Edge only Desktop tool is Windows only
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.