# Accessibility Testing

Ranked by the Vioscale composite score: a confidence-weighted blend of independent signals, not user reviews.

| # | Software | Score | Confidence | Vendor |
|--:|---|--:|---|---|
| 1 | [axe-core](https://www.vioscale.ai/software/axe-core) | 66.5 | 32% (low) | - |
| 2 | [Stark](https://www.vioscale.ai/software/stark) | 61.3 | 55% (medium) | - |
| 3 | [UserWay](https://www.vioscale.ai/software/userway) | 54.3 | 56% (medium) | - |
| 4 | [IBM Equal Access Accessibility Checker](https://www.vioscale.ai/software/ibm-equal-access-accessibility-checker) | 51.1 | 28% (low) | - |
| 5 | [Pa11y](https://www.vioscale.ai/software/pa11y) | 44.9 | 30% (low) | - |
| 6 | [Level Access](https://www.vioscale.ai/software/level-access) | 43.8 | 21% (low) | - |
| 7 | [accessiBe](https://www.vioscale.ai/software/accessibe) | 37 | 42% (low) | - |
| 8 | [Evinced](https://www.vioscale.ai/software/evinced) | 27.4 | 3% (low) | - |
| 9 | [Siteimprove](https://www.vioscale.ai/software/siteimprove) | 13.3 | 15% (low) | - |

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*Source: Vioscale (https://www.vioscale.ai/categories/accessibility-testing).*