BAAT
BAAT: A focused browser-based axe-core checker for automated website scans. Ranked #159 of 163 in Accessibility Testing Software by our editors (3.0/10); pricing: Free plan; best for developers wanting a lightweight open-source checker.
At a glance
- Editor score3.0 / 10
- PricingFree plan
- Best forDevelopers wanting a lightweight open-source checker
- Free planYes
- Paid fromFree
- Facts checked25 Sep 2026
Where it wins
- Custom axe-core rulesets and issue-impact filters
- Developer mode provides detailed test output
- Bookmarklet or userscript runs automated website checks in-browser
Where it doesn't
- Browser-only workflow does not cover broader platform testing
- No manual review or remediation workflow is included
- No CI/CD workflow or broader integrations beyond axe-core
Our verdict on BAAT
BAAT is an open-source accessibility testing tool for organizations developing accessible websites, with a practical focus on developers who want automated checks in the browser. It runs as a bookmarklet or userscript and uses axe-core to analyze websites, so its workflow stays close to the page being reviewed. Results include short issue descriptions and severity labels, while impact filters help narrow attention to selected findings. The result is a compact way to surface reported issues during development.
Its strongest differentiator is control within a lightweight scan workflow. Teams can use custom axe-core rulesets, switch on developer mode for detailed test output, and filter issues by impact. That combination gives developers more control than a fixed list of browser findings, while keeping the product focused on automated website checks. The open-source model also suits teams that want a browser-based checker without an additional software installation or browser plug-in.
BAAT is narrower than an accessibility program that combines automated scanning with manual review, remediation guidance, CI/CD workflows, or a broad integration layer. Its listed ecosystem connection is axe-core, and its platform is the web; there is no browser extension. Choose BAAT when browser-based, scan-focused checks and customizable axe-core analysis match the workflow. Choose another product when the team needs manual assessment, integrated remediation, pipeline automation, or wider platform coverage.
Your product? Our editors can test BAAT in depth and publish a review, labelled as paid · from $149/mo →
BAAT pricing
BAAT fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| WCAG coverage | Not verified |
| Automated scans | Yes |
| Manual review tools | No |
| Mobile testing | No |
| Browser extension | No |
| CI/CD integration | No |
| Remediation guidance | Not verified |
| Deployment | Browser extension |
| Platforms | Web |
| Support | Community |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | tools.caat.report |
| Facts checked | 25 Sep 2026 |
Alternatives to BAAT
- WAVEA low-cost starting point for page analysis, browser testing, and API automation.9.3
- IBM Equal Access Accessibility CheckerA broad free toolkit for automated web accessibility checks across development workflows.9.1
- Axe DevToolsA free-starting accessibility toolkit that extends from browser scans to CI/CD and APIs.8.9
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The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used BAAT for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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