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JavaScript API for Chrome and Firefox

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

Delightful JavaScript Testing.

📗🌐 🚢 Comprehensive and exhaustive JavaScript & Node.js testing best practices (August 2025)

JavaScript Testing utilities for React

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

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

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

Hurl, run and test HTTP requests with plain text.

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.

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.

Simple JavaScript testing framework for browsers and node.js

See interfaces like a human. E2E testing in natural language.

Most popular Mocking framework for unit tests written in Java

The Swift (and Objective-C) testing framework.

The property-based testing library for Python

The complete load testing platform. Everything you need for production-grade load tests. Serverless & distributed. Load test with Playwright. Load test HTTP APIs, GraphQL, WebSocket, and more. Use any Node.js module.

A Modern Testing Framework for Go

Test Automation Made Simple

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.

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

Tuist builds infrastructure for faster, more reliable build and test workflows across developers, CI, and coding agents. Shared cache, tests, and insights that sit alongside your existing CI.

mocking library for Kotlin

QA via natural language AI tests

Qodo-Cover: An AI-Powered Tool for Automated Test Generation and Code Coverage Enhancement! 💻🤖🧪🐞

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

🧪 single header unit testing framework for C and C++