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