Pa11y vs The A11Y Project

Compare Pa11y and The A11Y Project on the same questions, with pricing terms and sources shown where they are known.

Pa11y

Free, open source accessibility testing tools for developers and designers to identify and fix web accessibility issues

View Pa11y

The A11Y Project

Community-driven resources and guidance to make digital accessibility easier for designers, developers, and organizations

View The A11Y Project

Comparison table

Unknown means no reliable value is stored, not that a feature is missing.

Facts compared for Pa11y and The A11Y Project
QuestionPa11yThe A11Y Project
Pricing modelSame for bothFreeFree
Free planSame for bothYesYes
PlatformsSame for bothWebWeb
Listed featuresDiffers
  • Command-Line Testing
  • Automated Daily Testing
  • Progress Tracking
  • JSON Webservice API
  • CI Integration
  • WCAG Checklist
  • Self-Paced Workshops
  • Educational Videos
  • Resource Library
  • Community Directory

Pricing and limits

Plans can differ in scope, region and billing terms, so compare plan names rather than assuming equivalence.

Pa11y

Free plan: Yes

Subscriptions

  • Listed price: Free

Pricing verification date unknown. A check was attempted on Sep 22, 2026 but no value was found; that does not verify the prices.

The A11Y Project

Free plan: Yes

Subscriptions

  • Listed price: Free

Pricing verification date unknown.

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