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