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Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.

Bruno is a new and innovative API client, aimed at revolutionizing the status quo represented by Postman and similar tools out there.

Open-Source API Development Ecosystem • • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Run the GenVM linter to catch issues before deployment:

Maestro is an open-source framework that makes UI and end-to-end testing for Android, iOS, and web apps simple and fast.

Next generation testing framework powered by Vite.

Robot Framework |r| is a generic open source automation framework for acceptance testing, acceptance test driven development (ATDD), and robotic process automation (RPA). It has simple plain text syntax and it can be extended easily with generic and custom libraries.

☕️ Classic, reliable, trusted test framework for Node.js and the browser

js. In general, the goal of the project is to emulate enough of a subset of a web browser to be useful for testing and scraping real-world web applications.

You want to write maintainable tests for your React components. As a part of this goal, you want your tests to avoid including implementation details of your components and rather focus on making your tests give you the confidence for which they are intended.

Roam Control is a source-available SwiftUI app for location-based development, quality assurance and responsible personal testing on an iPhone you own and control.

A toolkit with common assertions and mocks that plays nicely with the standard library

PHPUnit is a programmer-oriented testing framework for PHP. It is an instance of the xUnit architecture for unit testing frameworks.

GoReplay is an open-source tool for capturing and replaying live HTTP traffic into a test environment in order to continuously test your system with real data. It can be used to increase confidence in code deployments, configuration changes and infrastructure changes.

Hurl is a command line tool that runs HTTP requests defined in a simple plain text format .

> "I found MSW and was thrilled that not only could I still see the mocked responses in my DevTools, but that the mocks didn't have to be written in a Service Worker and could instead live alongside the rest of my app. This made it silly easy to adopt. " > > — Kent C.

HTTP server mocking and expectations library for Node.js

Gray box end-to-end testing and automation framework for mobile apps

js is a simulation data generator to help the front-end to develop and prototype separate from the back-end progress and reduce some monotony particularly while writing automated tests.

Most popular Mocking framework for unit tests written in Java

The elegant testing framework for PHP developers and AI agents.

JS is a standalone, framework-agnostic JavaScript library that enables recording, replaying, and stubbing of HTTP interactions.

Capybara helps you test web applications by simulating how a real user would interact with your app. It is agnostic about the driver running your tests and comes with Rack::Test and Selenium support built in. WebKit is supported through an external gem.

A complete, running test framework — page objects, API contracts, data factories, CI —

Drives your web page in a real browser and tells you what broke. No tests to write, no LLM.