Compare software

Sa11yAccessibility Insights
Free

Free and open source.

 Free

Free and open source, published by Microsoft.

Web, Self-hosted Windows, Browser extension
  • Shows issues in place with plain fix instructions
  • Over 80 checks with rules you can switch off
  • FastPass catches common issues in a few minutes
  • Guided assessment against WCAG 2.1 AA
  • Aimed at content issues, not a full code audit
  • Needs to be added to a site or CMS by a developer
  • Web extension targets Chrome and Edge only
  • Desktop tool is Windows only
Self-hosted Downloadable app, Browser extension
Open source Open source
License not stated License not stated
No account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 24, 2026

Checked September 23, 2026

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