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Testing

5 technologies: what each one does, whether it is SaaS or open source, its price range and its website.

  • Biome

    Open source

    Fast formatter and linter for JavaScript and TypeScript.

    Used byDocumenso,Resend

    Website

  • Cypress

    Open source

    End-to-end testing that runs in the browser with a visual runner.

    Website

  • Jest

    Open source

    Widely used JavaScript test runner.

    Website

  • Playwright

    Open source

    End-to-end browser testing across Chromium, Firefox and WebKit.

    Used byCal.com,Documenso,PostHog

    Website

  • Vitest

    Open source

    Fast unit test runner powered by Vite.

    Used byDub,Ghost

    Website

Data from the open Wappalyzer database (enthec/webappanalyzer, GPL-3.0), updated every week. Site counts from the HTTP Archive. Code tools (frameworks, build, ORMs…) come from a list kept by Faundr.

More in Code

Languages 21Data pipelines and queues 18Backend frameworks 16Infrastructure and DevOps 12Databases and caches 10Full-stack frameworks 9Build tools and runtimes 8Styling and UI kits 8Data fetching and APIs 7ORMs and query builders 6UI libraries 6Mobile app frameworks 5Animation 4AI platforms 4Validation 3Desktop app frameworks 2