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axe DevTools vs Stark: catalog facts
axe DevTools	Stark
Freemium The browser extension has a free tier; wider toolkits are paid and sold through Deque.	Freemium Free sign-up available, with paid plans and demos for organisations.
Web, Browser extension	Web, Browser extension
Built on the widely used axe-core rules engine Checks run directly in the browser on the current page	Covers design, browser and code stages in one suite Free sign-up for individuals
Automated checks do not replace manual accessibility testing Advanced features are enterprise products sold through sales	Aimed mainly at companies, with advanced features behind sales Requires an account
Hosted service, Browser extension	Web application, Hosted service, Browser extension
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	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.