testing

JavaScript API for Chrome and Firefox

Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation

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

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Delightful JavaScript Testing.

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

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

Learn Go with test-driven development

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

Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, Llama, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI and Anthropic.

Node.js test runner that lets you develop with confidence 🚀

A modern, C++-native, test framework for unit-tests, TDD and BDD - using C++14, C++17 and later (C++11 support is in v2.x branch, and C++03 on the Catch1.x branch)

JavaScript Testing utilities for React

🐐 Simple and complete React DOM testing utilities that encourage good testing practices.

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.

Faker is a Python package that generates fake data for you.

Hurl, run and test HTTP requests with plain text.

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

Simple JavaScript testing framework for browsers and node.js

Most popular Mocking framework for unit tests written in Java

PHP Static Analysis Tool - discover bugs in your code without running it!

The pytest framework makes it easy to write small tests, yet scales to support complex functional testing