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Accessibility Insights vs axe DevTools: catalog facts
Accessibility Insights	axe DevTools
Free Free and open source, published by Microsoft.	Freemium The browser extension has a free tier; wider toolkits are paid and sold through Deque.
Windows, Browser extension	Web, Browser extension
FastPass catches common issues in a few minutes Guided assessment against WCAG 2.1 AA	Built on the widely used axe-core rules engine Checks run directly in the browser on the current page
Web extension targets Chrome and Edge only Desktop tool is Windows only	Automated checks do not replace manual accessibility testing Advanced features are enterprise products sold through sales
Downloadable app, Browser extension	Hosted service, 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.