Free & OpenSource REST API Testing Tool for all levels in a Test Pyramid

Built by testers, for testers - TestGear is a TMS that truly unites manual and automated testing, adapts to any testing framework, and is designed for flexibility, clarity, and collaboration to improve team performance and release better software, faster.

Automated robustness testing at the UI level

Built for developers and testers alike, SoapUI is the only open source tool that covers the entire testing spectrum (functional, security, load, mocking).

Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.

TestMu AI (Formerly LambdaTest) is a fully autonomous agentic quality engineering platform that empowers teams to test intelligently, smarter, and ship faster.