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ANDI vs Sa11y: catalog facts
ANDI	Sa11y
Free Free to use, provided by a US government agency.	Free Free and open source.
Web	Web, Self-hosted
Shows the accessible name a screen reader should announce Nothing to install beyond a bookmark	Shows issues in place with plain fix instructions Over 80 checks with rules you can switch off
Can be blocked by a page's Content Security Policy Desktop browsers only	Aimed at content issues, not a full code audit Needs to be added to a site or CMS by a developer
Web application	Self-hosted
Closed source	Open source
License not stated	License not stated
No account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.