Testing Tools GitHub Repositories (2026) · Open Source Tools

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.

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

Next generation testing framework powered by Vite.

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

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

The open source visual testing platform for teams and AI agents. Review the product, not just the code.

Hurl, run and test HTTP requests with plain text.

Quick and Easy server testing/validation

🔪Swiss-army knife for Android testing and development 🔪 ⛺

Open Source Toolkit for Robot Framework, providing Language Server Protocol support, Debugger, VSCode Extension, PyCharm Plugin and powerful CLI tools

The PHP Unit Testing framework.

Web Application Firewall Testing Framework - Go version

Test Automation Made Simple

Powerful, elegant and flexible test framework for Kotlin with assertions, property testing and data driven tests.

A light-weight, flexible, and expressive statistical data testing library

A node.js library for testing modern web applications

Approval Tests implementation in NodeJS

Chaos testing, network emulation, and stress testing tool for containers

Strategies for cleaning databases in Ruby. Can be used to ensure a clean state for testing.