Alfa vs Nexus Inclusion Website Scanner
Alfa
github.comNexus Inclusion Website Scanner
nexusinclusion.comSide by side
| Figure | Alfa | Nexus Inclusion Website Scanner |
|---|---|---|
| Price from | Free | €40.83/mo |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 1 | 7 |
| Spec score · Accessibility Testing Software | 9.0 (#8) | 7.8 (#88) |
| Automated scans | Yes | Yes |
| Founded | 2003 | A company launch release says Nexus Inclusion was founded by Kyran O'Mahoney in 2025. |
| Free plan | Yes | No |
| Headquarters | Copenhagen, Denmark | Nexus Inclusion says its head office is in Dublin, Ireland. |
| Purpose | Alfa is an open, standards-based accessibility conformance testing engine for websites built with HTML, CSS, and JavaScript. | The Website Accessibility Scanner detects website accessibility and compliance issues and provides actionable guidance to improve them. |
| Remediation guidance | Yes | Yes |
| Standards | It tests against accessibility standards such as the Web Content Accessibility Guidelines (WCAG). | The scanner helps align websites with WCAG, ADA, EAA, and Section 508 standards. |
Plans
Nexus Inclusion Website Scanner
- Starter€41 a month
- Pro€291 a month
- Advanced€458 a month
- Starter€490 a year
- Pro€3,490 a year
- Advanced€5,490 a year
- EnterprisePriced on request
In their own words
Alfa
Alfa is a free, open accessibility testing engine for websites built with HTML, CSS, and JavaScript. It checks pages against accessibility standards such as WCAG, using included rules or pluggable rules in the ACT Rules Format. Developers can add custom rules and filter results by conformance level or WCAG version. Audit output follows the Evaluation and Report Language schema as JSON-LD, and the command-line interface can audit a single page and save results as JSON. Scraper and crawler tools create page representations and discover pages across a site or subdomain. Ready-made integrations cover frameworks and test tools including Angular, React, Vue, Cypress, Jest, Playwright, Puppeteer, Selenium, and WebdriverIO. Alfa is distributed as separate npm packages under the MIT license. It runs in ECMAScript 2022-compatible JavaScript environments, including recent Node.js and browser versions. Building from source requires Node.js 20 or later and Yarn. The project says most integrations are experimental and may change; older environments may be targetable from source but are not explicitly supported.
Nexus Inclusion Website Scanner
Nexus Inclusion Website Scanner has no write-up on Specifiction yet; its figures are above.