Alfa
Alfa: A developer-focused, open-source choice for automated WCAG 2.2 web audits. Ranked #19 of 163 in Accessibility Testing Software by our editors (7.3/10); pricing: Free plan; best for developers wanting open-source automated audits.
At a glance
- Editor score7.3 / 10
- PricingFree plan
- Best forDevelopers wanting open-source automated audits
- Free planYes
- Paid fromFree
- Founded2003 · Copenhagen, Denmark
- Facts checked21 Sep 2026
Where it wins
- Free and open source with WCAG 2.2 rule filtering
- Crawls linked pages and audits through a command-line interface
- Integrates with Playwright, Puppeteer, Selenium, and Cypress
Where it doesn't
- Does not provide manual accessibility review
- Focused on web pages rather than mobile testing
- Its self-hosted, developer-oriented workflow requires technical setup
Our verdict on Alfa
Alfa is an open-source accessibility conformance testing engine from Siteimprove A/S. It evaluates HTML, CSS, and JavaScript websites against accessibility rules, including WCAG-based rules implemented with the Accessibility Conformance Testing format. Developers and teams can use it in content development, testing, and publication workflows through npm packages, command-line tools, scrapers, crawlers, and browser-automation integrations. The free, open-source model makes Alfa a practical fit for teams that want to add automated accessibility checks to their own development processes.
Its strongest area is workflow flexibility. Alfa can audit individual pages from the command line, scrape web pages, and crawl linked pages across a site. Teams can filter WCAG 2.2 rules and outcomes, define custom rules, and produce EARL reports encoded as JSON-LD. Integrations with Playwright, Puppeteer, Selenium, and Cypress support automated checks within established browser-testing workflows, making the product a natural match for developer-led testing and CI/CD processes.
Alfa is narrower than a complete accessibility program. The product focuses on automated web conformance testing and does not provide manual review or mobile testing. Its self-hosted and command-line-oriented delivery also suits technical teams more than buyers seeking a guided interface or a broader accessibility platform. Choose Alfa when open-source control, customizable rules, crawling, and browser-automation integration are priorities. Consider an alternative when manual assessment, mobile coverage, or a less developer-centric workflow is required.
Your product? Our editors can test Alfa in depth and publish a review, labelled as paid · from $149/mo →
Alfa pricing
Alfa fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| WCAG coverage | Not verified |
| Automated scans | Yes |
| Manual review tools | Not verified |
| Mobile testing | Not verified |
| Browser extension | Not verified |
| CI/CD integration | Yes |
| Remediation guidance | Yes |
| Deployment | Self-hosted |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 13 integrations: Cypress, Jest, Playwright, Puppeteer, Selenium, WebdriverIO … See all → |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 21 Sep 2026 |
Alfa integrations
Alfa lists 13 integrations on its own site.
- Cypress
- Jest
- Playwright
- Puppeteer
- Selenium
- WebdriverIO
- React
- Vue
- Angular
- Jasmine
- Vitest
- Cheerio
- jQuery
Alternatives to Alfa
- WAVEA low-cost starting point for page analysis, browser testing, and API automation.9.3
- IBM Equal Access Accessibility CheckerA broad free toolkit for automated web accessibility checks across development workflows.9.1
- Axe DevToolsA free-starting accessibility toolkit that extends from browser scans to CI/CD and APIs.8.9
Also Ranked In
Alfa is ranked in 3 of our directories.
Used Alfa? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Alfa for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
Alfa is listed in our Accessibility Testing Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/alfa/"><img src="https://www.itechguides.com/best/badge/alfa.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update