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WAVE vs ANDI: catalog facts
WAVE	ANDI
Freemium The online tool and extensions are free; the API and stand-alone testing engine are paid.	Free Free to use, provided by a US government agency.
Web, Browser extension	Web
Shows issues in place on the page Extensions for Chrome, Firefox and Edge	Shows the accessible name a screen reader should announce Nothing to install beyond a bookmark
Bulk testing requires the paid API or engine Automated results still need human judgement	Can be blocked by a page's Content Security Policy Desktop browsers only
Web application, Browser extension	Web application
Closed 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.