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✅ The Node.js best practices list (July 2026)

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

JavaScript API for Chrome and Firefox

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

💻 A fully functional local AWS cloud stack. Develop and test your cloud & Serverless apps offline

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

Delightful JavaScript Testing.

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

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

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

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

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.

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

Simple JavaScript testing framework for browsers and node.js

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

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。

Integrated end-to-end testing framework written in Node.js and using W3C Webdriver API. Developed at @browserstack

Generic automation framework for acceptance testing and RPA

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

ARTEMIS turns natural-language instructions into reliable Android automation. It automates end-to-end workflows, captures logs, and integrates seamlessly with AI coding assistants such as Antigravity, Codex, and Claude Code. It also achieves 99%+ success rate on AndroidWorld Benchmark.

The property-based testing library for Python

Sandbox for developing and testing UI components in isolation

A library for setting up Ruby objects as test data.

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

AFL++ is a state-of-the-art fuzzer, and #1 in benchmarks. It was originally based on AFL. Today it comes with qemu 5.1, collision-free coverage, enhanced laf-intel & redqueen, AFLfast++ power schedules, MOpt mutators, unicorn_mode, and a lot more!

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