Third-party software
A11yBird is built on open-source software. These are the projects we depend on and the licences we use them under.
The accessibility engine
A11yBird’s automated checks are performed by axe-core, an open-source rules engine developed by Deque Systems.
Powered by axe-core®
axe-core is used unmodified. We configure which rules run; we do not change how they work. The Mozilla Public License 2.0 is a file-level copyleft licence — the source is available at the link above, and any modifications to those files would have to be published under the same licence.
axe-core® is a trademark of Deque Systems, Inc. Deque Systems is not affiliated with A11yBird, does not sponsor or endorse A11yBird, and is not responsible for A11yBird’s results. The attribution above is used as permitted by Deque’s trademark policy. Any scan results, scores or interpretations presented by A11yBird are ours alone.
Other software
- Next.js16.3.2 · MIT
- React19.2.8 · MIT
- Convex1.45.0 · Apache-2.0
- @convex-dev/rate-limiter0.3.2 · Apache-2.0
- Playwright1.62.1 · Apache-2.0
- AWS SDK for JavaScript (S3 client)3.1116.0 · Apache-2.0
- Tailwind CSS4.3.3 · MIT
- Space GroteskSIL Open Font License 1.1
- JetBrains MonoSIL Open Font License 1.1
Something missing or wrongly attributed? Tell us at legal@a11ybird.com and we will correct it.