Testing GitHub Repositories (2026) · Open Source Tools

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

Angular testing library for mocking components, directives, pipes, services and facilitating TestBed setup

Asyncio support for pytest

Verify is a snapshot testing tool that simplifies the assertion of complex data models and documents.

Turns the documentation you already write into tests that run. A failing test means your product and your docs disagree, and names the section.

:pancakes: The most popular pytest snapshot plugin

Intelligent cloud testing made easy.

Simulator-free, headless SwiftUI checks for AI coding agents: render screens as accessibility trees and hot-reload views in ~2 s, without the iOS Simulator.

QA Wolf from anywhere — your terminal, your CI, your AI agent.

MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSockets, TCP and more on a single port, with additional support for HTTP/3, message brokers, and AI/LLM APIs.

Interactive screenshot tests for Compose UI

Test Automation Made Simple

A code coverage tool to generate native V8 reports or Istanbul reports.

The elegant testing framework for PHP developers and AI agents.

Robot Framework Browser library powered by Playwright.

CLI tool for linting and testing Helm charts

The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀

Command line driven CI frontend and development task automation tool.

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.

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