IBM Equal Access Toolkit vs Pa11y
Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
Free and open source
Open sourceFree and open source
Open sourceWhat drives the bill
The metric that actually scales your invoice.
Free and open source. You pay in engineering time and CI minutes.
Free and open source. You pay in engineering time and CI minutes.
Free tier
Everything, self-hosted
Everything, self-hosted
Open source
Apache-2.0
LGPL-3.0
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Emerging
IBM · since 2020
Established
OSS community · since 2013
Strengths
- Completely free including CI integration and reporting.
- Guidance is written for developers with concrete code examples.
- Includes design and content guidance beyond the code checker.
- Free, scriptable and trivially added as a CI gate.
- Tests a sitemap of URLs in one run, unlike page-by-page extensions.
- Self-hosted dashboard for tracking without a vendor.
Limitations
- Smaller community than axe-core, so fewer worked examples.
- Reporting is basic compared with commercial platforms.
- Rule set differs slightly from axe, which can confuse cross-tool comparisons.
- No guided manual testing or remediation workflow.
- Testing authenticated or interactive states requires scripting actions.
- Maintenance activity has been intermittent.
Best for
Teams wanting a free, well-documented alternative or complement to axe.
Teams wanting free automated accessibility gates across many pages.
All of these integrate with: GitHub Actions.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.