A11yInspect vs Thunders Accessibility Agent
A11yInspect
barrierbreak.comThunders Accessibility Agent
thunders.aiSide by side
| Figure | A11yInspect | Thunders Accessibility Agent |
|---|---|---|
| Price from | $10/mo | $375/mo |
| Free plan | Yes | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 3 | 3 |
| Spec score · Accessibility Testing Software | 9.2 (#3) | 7.9 (#84) |
| Accessibility Checks | A11yInspect provides more than 600 accessibility checks across 30 Success Criteria. | The agent can test WCAG A, AA, and AAA and check keyboard navigation, contrast, and ARIA conflicts. |
| Founded | 2004 | 2025 |
| Headquarters | Mumbai, India | Paris, France and Tunis, Tunisia |
| integrations | A11yInspect integrates with A11yNow to log manual accessibility issues alongside automated test results. | Listed integrations include GitHub Actions, GitLab CI, Jenkins, CircleCI, Azure DevOps, Jira, Linear, Xray, and MCP-compatible assistants such as Claude, ChatGPT, and Cursor. |
| support | Support is available through [email protected], with billing questions handled at [email protected]. | Starter includes email and chat support, Pro adds priority response and guided onboarding, and Enterprise includes a dedicated success manager and end-to-end setup. |
Plans
Thunders Accessibility Agent
- Starter$375 a month
- Pro$1,000 a month
- EnterprisePriced on request
In their own words
A11yInspect
A11yInspect is a browser extension that works with the Inspect tool in DevTools to assess web-page accessibility against WCAG 2.2. Automated checks cover more than 600 issues across 30 Success Criteria, with a stated false-positive rate below 1%. Results classify findings as Fails, Validates, or Suggestions and map them to criteria and severity. Supported standards include WCAG, Section 508, EN 301 549, GIGW 3.0, and IS 17802. Manual review tools include bookmarklets for headings, tab order, grayscale, target size, text spacing, and forms, as well as a color contrast checker. The extension is available for Chrome, Edge, and Firefox and can examine a page or a specific element. Pages can be tested in any language, although the interface is English-only; the extension is for desktop browsers and cannot be used on mobile. The Free plan allows unlimited webpage testing without login or a credit card. Pro costs $120.00 per year and includes a 30-day trial without a card; users move to Free if they do not subscribe when it ends.
Thunders Accessibility Agent
Thunders Accessibility Agent has no write-up on Specifiction yet; its figures are above.