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Rocket Validator vs Tanaguru Engine: catalog facts
Rocket Validator	Tanaguru Engine
Paid Paid subscription service with a free trial.	Free Offered free as part of Tanaguru's open-source solutions.
Web	Self-hosted
Site-wide HTML and accessibility checks in one report Up to 5,000 pages per report	Automates about 380 accessibility tests Audits pages, whole sites, web apps and templates
Paid service after the trial Requires an account	Automation cannot check every accessibility criterion Licence and installation details are not given on the product page
Hosted service	Self-hosted
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	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.