Alfa vs WCAG Radar
Alfa
github.comWCAG Radar
wcagtoolkit.comSide by side
| Figure | Alfa | WCAG Radar |
|---|---|---|
| Price from | Free | €9.92/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 1 | 5 |
| Spec score · Accessibility Testing Software | 9.0 (#8) | 8.6 (#27) |
| Automated scans | Yes | Yes |
| Free plan | Yes | Yes |
| Headquarters | Copenhagen, Denmark | Amsterdam, Netherlands |
| Integrations | The integrations repository lists packages for Angular, Chai, Cheerio, Cypress, Jasmine, Jest, jQuery, Playwright, Puppeteer, React, Selenium, Unexpected, Vitest, Vue, and WebdriverIO. | The maker describes browser extensions for Chrome, Firefox and Edge, with Chrome also working in Brave and Vivaldi; a bookmarklet works in browsers with a bookmarks bar, including Safari. |
| Maker | The repository identifies Siteimprove A/S as the copyright holder, and Siteimprove says it was founded in Denmark in 2003. | WCAG Toolkit says it is built by Proper Access, an Amsterdam digital accessibility audit firm whose work includes government, culture and e-commerce. |
| Purpose | Alfa is an open, standards-based accessibility conformance testing engine for websites built with HTML, CSS, and JavaScript. | WCAG Radar runs accessibility checks on the page open in your browser, including pages behind a login and on localhost. |
| Remediation guidance | Yes | Yes |
| Standards | It tests against accessibility standards such as the Web Content Accessibility Guidelines (WCAG). | Its checks cover WCAG 2.2 success criteria at levels A and AA, and the site describes the product as covering WCAG 2.1 and 2.2 AA. |
Plans
WCAG Radar
- FreeFree
- Personal licence€1,195 a month
- Personal licence annual€119 a year
- Organisation subscription€350 a year
- Personal licence€119 a year
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.
WCAG Radar
WCAG Radar has no write-up on Specifiction yet; its figures are above.