Illuminating accessibility for software.
On April 24, 2027, large government entities face a legal deadline to make their websites accessible. We built a scanner. We scanned them. We published everything — every finding, every score, the complete methodology. Because accountability requires transparency, and transparency requires putting your work where anyone can see it.
- US Governments — US government websites (Section 508)
- US Financial — Major financial institutions (ADA Title III)
- Methodology — How the Sonde Score works
| Rank | Website | Sonde Score | Findings | Pages |
|---|---|---|---|---|
| — | Leaderboard updates with each scan batch | — | — | — |
Scores are computed using the Sonde Score — a 0-1000 compliance index that weights findings by their impact on human access.
Clone the repo and serve the site on your machine:
git clone https://github.com/sondeinc/daylight.git
cd daylight
pnpm install
pnpm dayOpens at http://localhost:5080/. Requires Node.js and pnpm.
Know a government website that should be scanned? Open a nomination. The most-upvoted nominations are prioritized in each scan batch.
Found a false positive? Think we missed something? Report it. Every report makes the scanner better — you are our QA army.
Have questions about how scores are calculated, or ideas for improving the algorithm? Join the Methodology discussion.
The Sonde Score is a universal 0-1000 compliance index — think of it like a credit score for accessibility. Each finding is weighted by its impact on human access: a keyboard trap (critical) counts far more than a best-practice suggestion (low). The raw penalty is normalized per page so scores are comparable across sites of any size.
Full details: METHODOLOGY.md
Sonde is a code and compliance analysis platform. We treat the entire software lifecycle as a queryable, provenance-tracked graph. The Section 508 campaign is our first public demonstration of what that analysis can do.
We're not here to shame. We're here to help. File an issue if we got something wrong. Nominate a site if you think it matters. We publish everything because we believe public institutions deserve public accountability — and public help.
Website: sonde.life
This project provides automated accessibility analysis for informational purposes only. Findings are generated by automated tooling and do not constitute legal advice, a formal audit, or certification of compliance with Section 508, WCAG 2.1 AA, or any other standard. Automated scanning cannot detect all accessibility barriers — manual testing by people with disabilities remains essential for comprehensive evaluation.
Scores, findings, and assessments may contain errors or omissions. If you believe a finding is incorrect, please report it. We will investigate and correct confirmed errors in the next scan batch.
This project is licensed under the Apache License 2.0.