Testing Open Source Projects

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

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

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

Write scalable load tests in plain Python 🚗💨

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

Learn Go with test-driven development

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

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

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)

The PHP Unit Testing framework.

Roadmap to becoming an ASP.NET Core developer in 2026

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

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, run and test HTTP requests with plain text.

Roadmap to becoming a Go developer in 2020

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

Tools of The Trade, from Hacker News.

Kubernetes IN Docker - local clusters for testing Kubernetes

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

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

HTTP Request & Response Service, written in Python + Flask.

MeterSphere 是新一代的开源持续测试工具，内置 AI 助手，让软件测试工作更简单、更高效，不再成为持续交付的瓶颈。

A faster, simpler way to drive browsers supporting the Chrome DevTools Protocol.

Custom Selenium Chromedriver | Zero-Config | Passes ALL bot mitigation systems (like Distil / Imperva/ Datadadome / CloudFlare IUAM)

:alarm_clock: :fire: A TCP proxy to simulate network and system conditions for chaos and resiliency testing

Generic automation framework for acceptance testing and RPA

Pest is an elegant PHP testing Framework with a focus on simplicity, meticulously designed to bring back the joy of testing in PHP.

Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.

The Swift (and Objective-C) testing framework.

The Web Security Testing Guide is a comprehensive Open Source guide to testing the security of web applications and web services.

A Modern Testing Framework for Go

Test Automation Made Simple

The property-based testing library for Python

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

The Official Golang driver for MongoDB

Go testing in the browser. Integrates with `go test`. Write behavioral tests in Go.

A library for setting up Ruby objects as test data.

A curated selection of blog posts on Go

Terratest is a Go library that makes it easier to write automated tests for your infrastructure code.

A mock code autogenerator for Go

A Chrome DevTools Protocol driver for web automation and scraping.

A collection of public resources about how software companies test their software

The fastest feature-rich C++11/14/17/20/23 single-header testing framework

Golang gRPC Middlewares: interceptor chaining, auth, logging, retries and more.

The fuzzer afl++ is afl with community patches, qemu 5.1 upgrade, collision-free coverage, enhanced laf-intel & redqueen, AFLfast++ power schedules, MOpt mutators, unicorn_mode, and a lot more!

Sql mock driver for golang to test database interactions

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine developed by the OISF and the Suricata community.

syzkaller is an unsupervised coverage-guided kernel fuzzer

Bash Automated Testing System

Windows GUI Automation with Python (based on text properties)

Android Unit Testing Framework

:mailbox: SMTP Server + Web Interface for viewing and testing emails during development.

Quick and Easy server testing/validation

A payment application to demonstrate real-world usage of Cypress testing methods, patterns, and workflows.

mocking library for Kotlin

Bash Infinity is a modern standard library / framework / boilerplate for Bash

A client-side server to build, test and share your JavaScript app

Automated Penetration Testing Framework - Open-Source Vulnerability Scanner - Vulnerability Management

Jest cheat sheet

Automatically generate Go test boilerplate from your source code.