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Accessibility Insights vs ANDI: catalog facts
Accessibility Insights	ANDI
Free Free and open source, published by Microsoft.	Free Free to use, provided by a US government agency.
Windows, Browser extension	Web
FastPass catches common issues in a few minutes Guided assessment against WCAG 2.1 AA	Shows the accessible name a screen reader should announce Nothing to install beyond a bookmark
Web extension targets Chrome and Edge only Desktop tool is Windows only	Can be blocked by a page's Content Security Policy Desktop browsers only
Downloadable app, Browser extension	Web application
Open 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.