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Discover top open-source software, updated regularly with real-world adoption signals.
Fast, reliable browser testing for modern web applications.
Cypress delivers fast, easy testing for any web app, supporting end‑to‑end and component tests across frameworks with debugging and cloud integration.
Cypress is a developer‑centric testing tool designed for modern web applications. It targets front‑end engineers, QA specialists, and DevOps teams who need reliable end‑to‑end and component testing without complex configuration. By running directly in the browser, Cypress gives immediate feedback and a visual test runner that mirrors the application under test.
The framework automatically waits for elements, handles network stubbing, and provides time‑travel debugging that lets you step back through each command. Component testing is built in for React, Angular, Vue, and Svelte, enabling isolated UI verification alongside full application flows. Integration with Cypress Cloud adds test status badges, centralized reporting, and a replay feature for flaky test analysis. Installation is a single npm (or yarn/pnpm) command, after which tests can be executed locally or in CI pipelines with minimal setup.
After installing, launch the Cypress Test Runner with npx cypress open to record, edit, and run tests interactively. For CI, use cypress run in headless mode and publish results to Cypress Cloud for team visibility. The MIT‑licensed project is actively maintained and supports macOS, Linux, and Windows.
When teams consider Cypress, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Login flow end‑to‑end test
Validate user authentication across browsers, catching regressions before release.
React button component test
Ensure isolated component renders and responds to clicks, speeding up UI development.
CI pipeline integration
Automatically run Cypress tests on pull requests, blocking merges on failures.
Flaky test debugging with test replay
Replay failing test steps in the Cypress Cloud UI to pinpoint root causes.
Run `npm install cypress --save-dev` (or `yarn add cypress --dev` / `pnpm add cypress --save-dev`) and Cypress will download the binary for your OS.
Yes, Cypress supports Chrome, Chromium, Edge, and Firefox out of the box; you select the browser when launching the test runner.
A markdown badge you can add to your README that shows the latest test status or count from Cypress Cloud, providing instant visibility.
Cypress is released under the MIT license and can be used freely; optional cloud services have free tiers for open‑source repositories.
Cypress automatically retries commands until the element appears or a timeout is reached, eliminating the need for explicit waits.
Project at a glance
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