Alfa vs TestParty
Alfa
github.com
TestParty
testparty.aiSide by side
| Figure | Alfa | TestParty |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 8 |
| Spec score · Accessibility Testing Software | 9.0 (#8) | 8.5 (#30) |
| CI/CD integration | Yes | Yes |
| Company | Siteimprove says it was founded in Denmark in 2003 and lists Copenhagen among its locations. | TestParty says its origin traces to co-founder Jason's work responding to accessibility lawsuit tickets while at Twitch, where a task estimated at two weeks took the product team months. |
| Free plan | Yes | Yes |
| Headquarters | Copenhagen, Denmark | New York, New York, United States |
| Integrations | The integrations repository lists packages for Angular, Chai, Cheerio, Cypress, Jasmine, Jest, jQuery, Playwright, Puppeteer, React, Selenium, Unexpected, Vitest, Vue, and WebdriverIO. | The homepage displays technology and organization logos including Shopify, WordPress, Drupal, Axe, Squiz, Slack, Jira, GitLab, React, HTML5, CSS3, JavaScript, TypeScript, and Angular. |
| Standards | It tests against accessibility standards such as the Web Content Accessibility Guidelines (WCAG). | TestParty says its platform addresses WCAG 2.2 and its customers have achieved compliance with ADA, EAA, and Section 508 requirements. |
Plans
TestParty
- FreeFree
- ProPrice not published
- BasicFree
- Other PlatformsPriced on request
- PremiumPriced on request
- ProfessionalPriced on request
- ShopifyPriced on request
- Shopify PlusPriced 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.