Test runners, E2E frameworks and API clients.
Cross-browser end-to-end testing framework from Microsoft that automates Chromium, Firefox, and WebKit with a single API.
Developer-friendly end-to-end testing tool that runs directly in the browser for fast, debuggable test execution.
Widely used JavaScript test runner with built-in assertions, mocking, and snapshot testing out of the box.
Vite-native unit test framework offering near-instant watch mode and a Jest-compatible API.
API client for building, testing, and sharing HTTP requests, with collections and automated test scripts.
Lightweight REST and GraphQL client focused on a clean interface for organizing and running API requests.
A developer-centric load and performance testing tool, scripted in JavaScript, for finding out how an API or app behaves under real traffic before users do.
A family of DOM-testing utilities (React, Vue, Angular and more) that encourages writing tests around how users actually interact with your app, rather than its internal implementation details.