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WAVE vs Rocket Validator: catalog facts
WAVE	Rocket Validator
Freemium The online tool and extensions are free; the API and stand-alone testing engine are paid.	Paid Paid subscription service with a free trial.
Web, Browser extension	Web
Shows issues in place on the page Extensions for Chrome, Firefox and Edge	Site-wide HTML and accessibility checks in one report Up to 5,000 pages per report
Bulk testing requires the paid API or engine Automated results still need human judgement	Paid service after the trial Requires an account
Web application, Browser extension	Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	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 23, 2026

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