Testing & QA

Development tool to mock API endpoints quickly and easily - NOT MAINTAINED

WireMock.Net is a flexible product for stubbing and mocking web HTTP responses using advanced request matching and response templating. Based on WireMock Java, but extended with more functionality. Full documentation can be found at https://wiremock.org/dotnet/.

A minimal test double library for TDD with JavaScript

A lightweight AWS service emulator written in Go

BDD styled unit test framework for Kubernetes Helm charts as a Helm plugin.

An analysis tool for Python that blurs the line between testing and type systems.

Testsigma is an agentic test automation platform powered by AI-coworkers that work alongside QA teams to simplify testing, accelerate releases and improve quality across web, mobile, desktop, API, and applications like Salesforce and SAP.

🐷 Poku makes testing easy for Node.js, Bun, Deno, and you at the same time.

Apache Geb: Very Groovy Browser Automation

A library that creates fully populated objects for your unit tests.

Replace any .NET method (including static and non-virtual) with a delegate

A lightweight library to simplify and generalize the process of writing unit tests for C applications.

The open-source Playwright library for AI browser regression testing with intelligent caching, auto-healing, and multi-model verification.

Mocking library for TypeScript

Golang version of Pact. Pact is a contract testing framework for HTTP APIs and non-HTTP asynchronous messaging systems.

Chaos Monkey for Spring Boot

End-to-end testing with AI

Jest configuration preset for Angular projects.

🐰 Bencher - Continuous Benchmarking

Mock 'http' objects for testing Express,js, Next.js and Koa routing functions

RocketSim — 30+ tools for Xcode's iOS Simulator. Testing, debugging, network monitoring, captures, accessibility, app actions, and AI agent automation via the RocketSim CLI. Used by 80k+ developers.