ACE Scanner vs Alfa
ACE Scanner
accessibilitychecker.orgAlfa
github.comSide by side
| Figure | ACE Scanner | Alfa |
|---|---|---|
| Price from | $89/mo | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 1 |
| Spec score · Accessibility Testing Software | 8.3 (#45) | 9.0 (#8) |
| Automated scans | Yes | Yes |
| CI/CD integration | Yes | Yes |
| Founded | 2019 | 2003 |
| Free plan | No | Yes |
| Headquarters | 4 Peddlers Row, Newark, Delaware 19702, United States | Copenhagen, Denmark |
| Workflow Integrations | It provides a REST API for CI/CD integration and one-click Jira bug filing. | The integrations repository lists packages for Angular, Chai, Cheerio, Cypress, Jasmine, Jest, jQuery, Playwright, Puppeteer, React, Selenium, Unexpected, Vitest, Vue, and WebdriverIO. |
| Remediation guidance | Yes | Yes |
Plans
ACE Scanner
- Lite$89 a month
- Starter$149 a month
- Growth$299 a month
- TailoredPriced on request
In their own words
ACE Scanner
ACE Scanner has no write-up on Specifiction yet; its figures are above.
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.