# axe-core vs Pa11y

| Attribute | axe-core | Pa11y |
|---|---|---|
| **Vioscale score** | 66.5 (32% (low)) | 44.9 (30% (low)) |
| activity.commits_last_30d | 37 | 3 |
| adoption.dependent_repos | 1,185,064 | 1,668 |
| adoption.github_stars | 7,446 | 4,490 |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | An open-source JavaScript testing framework that analyzes websites and HTML-based interfaces to identify accessibility violations and compliance issues. It integrates into existing test environments and returns detailed violation reports in JSON format. | A suite of free and open-source tools for identifying and tracking accessibility issues on websites. Provides both automated testing via a web dashboard and command-line utilities for developers. |
| features.capabilities | - | `{"open_source":true,"scan_method":"automated-rules-engine","ci_cd_integration":true,"continuous_monitoring":true}` |
| integrations.count | 7 | - |
| integrations.list | `[{"name":"VS Code (axe-linter extension)"},{"name":"npm/pnpm (package manager)"},{"name":"GitHub Actions"},{"name":"Puppeteer"},{"name":"Selenium"},{"name":"Jest"},{"name":"Testing frameworks"}]` | - |
| language.primary | JavaScript | JavaScript |
| license.spdx | MPL-2.0 | LGPL-3.0 |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true,"web":true,"linux":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://github.com/pricing","retrievedAt":"2026-08-17T21:33:35.636Z"}` | `{"type":"open_source","summary":"Free and open source","freeTier":true,"sourceUrl":"https://pa11y.org/","retrievedAt":"2026-08-21T13:21:08.576Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 50 | 131 |
| release.history | `[{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.13.0","date":"2026-08-05T16:52:19Z","type":"stable","version":"v4.13.0"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.12.1","date":"2026-06-10T10:27:13Z","type":"stable","version":"v4.12.1"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.12.0","date":"2026-06-01T17:21:16Z","type":"stable","version":"v4.12.0"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.11.4","date":"2026-04-28T15:11:19Z","type":"stable","version":"v4.11.4"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.11.3","date":"2026-04-13T18:15:09Z","type":"stable","version":"v4.11.3"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.11.2","date":"2026-03-31T11:23:43Z","type":"stable","version":"v4.11.2"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.11.1","date":"2026-01-06T19:10:42Z","type":"stable","version":"v4.11.1"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.11.0","date":"2025-10-09T16:40:24Z","type":"stable","version":"v4.11.0"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.10.3","date":"2025-03-05T16:07:02Z","type":"stable","version":"v4.10.3"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.10.2","date":"2024-10-23T16:43:04Z","type":"stable","version":"v4.10.2"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.10.1","date":"2024-10-16T17:29:04Z","type":"stable","version":"v4.10.1"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.10.0","date":"2024-07-29T16:21:24Z","type":"stable","version":"v4.10.0"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.9.1","date":"2024-05-06T15:54:43Z","type":"stable","version":"v4.9.1"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.9.0","date":"2024-03-25T19:39:03Z","type":"stable","version":"v4.9.0"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.8.4","date":"2024-02-07T18:01:21Z","type":"stable","version":"v4.8.4"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.8.3","date":"2023-12-18T21:06:45Z","type":"stable","version":"v4.8.3"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.8.2","date":"2023-09-21T16:25:43Z","type":"stable","version":"v4.8.2"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.8.1","date":"2023-09-08T16:24:14Z","type":"stable","version":"v4.8.1"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.8.0","date":"2023-09-06T17:44:24Z","type":"stable","version":"v4.8.0"},{"url":"https://github.com/dequelabs/axe-core/releases/tag/v4.7.2","date":"2023-05-25T16:29:23Z","type":"stable","version":"v4.7.2"}]` | `[{"url":"https://github.com/pa11y/pa11y/releases/tag/9.1.1","date":"2026-02-26T14:45:52Z","type":"stable","version":"9.1.1"},{"url":"https://github.com/pa11y/pa11y/releases/tag/9.1.0","date":"2026-02-03T18:13:04Z","type":"stable","version":"9.1.0"},{"url":"https://github.com/pa11y/pa11y/releases/tag/9.0.1","date":"2025-09-25T13:56:19Z","type":"stable","version":"9.0.1"},{"url":"https://github.com/pa11y/pa11y/releases/tag/9.0.0","date":"2025-05-09T01:30:35Z","type":"stable","version":"9.0.0"},{"url":"https://github.com/pa11y/pa11y/releases/tag/8.0.0","date":"2024-03-27T03:22:52Z","type":"stable","version":"8.0.0"},{"url":"https://github.com/pa11y/pa11y/releases/tag/7.0.0","date":"2024-01-16T06:42:20Z","type":"stable","version":"7.0.0"}]` |
| security.scorecard | 6.5 | 7.3 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=axe-core&per_page=100","last_12m":0,"max_severity":null}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=pa11y&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Accessibility Testing)

| Capability | axe-core | Pa11y |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Scan method | - | Automated rules engine |
| Wcag level | - | - |
| Ci cd integration | - | ✓ |
| Browser extension | - | - |
| Design stage plugin | - | - |
| CMS plugins | - | - |
| Continuous monitoring | - | ✓ |
| Vpat acr generation | - | - |
| Manual audit service | - | - |
| Overlay widget | - | - |
| Document PDF testing | - | - |
| Open source | - | ✓ |

*Source: Vioscale. Generated 2026-09-01T16:27:47.897Z. "-" = undocumented, not absent.*