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Ariada vs Testaro

Both stand on accessibility testing software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Ariada

Free plan ExtensionSelf-hostedWeb

Ariada combines accessibility rules, workflow automation, and evidence generation without requiring an account or API key. Its static, public-page scan scope may not fit sites that require interaction or private access.

Visit Ariada

Testaro

Free plan APILinuxMac+2

Testaro provides a broad, self-hosted collection of web accessibility and standards checks in a uniform reporting workflow. Its installation requirements and WAVE’s URL-only limitation matter when planning coverage.

Visit Testaro

The facts

AriadaTestaro
Free planYesYes
Open sourceNot publishedNot published
Runs onExtension, Self-hosted, WebAPI, Linux, Mac, Self-hosted, Windows
Lowest paid planFree or on requestFree or on request
Plans published11
MakerNot publishedNot published
Websiteariada.orggithub.com
On accessibility testing software#22 of 168#18 of 168

Ariada: what it does well

  • Free modules under the EUPL-1.2 license
  • Scans WCAG 2.2 AA and EAA requirements
  • Produces VPAT 2.5 INT and accessibility.json files
  • Adapters listed for five testing frameworks

What to know first

  • Hosted scans cover public URLs only
  • Scans do not interact with controls or logged-in views

Testaro: what it does well

  • MIT-licensed and free to install independently
  • Combines results from many rule engines
  • About 1,300 rules across listed engines
  • Supports daemon and single-job execution
  • Includes remediation guidance and mobile testing

What to know first

  • Requires Node.js 22.12 or later
  • Playwright browser binaries must also be installed
  • WAVE cannot test non-URL-accessible page states

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