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

k6 Open Source is designed for load testing. Extensible to support other types of testing.

Robot Framework is a generic open source automation framework. It can be used for test automation and robotic process automation (RPA).

Hoppscotch is an open-source API development ecosystem that helps you create and test your API requests saving precious time in development.

Gatling is a powerful open-source load testing solution that integrates with your development pipeline. It includes a web recorder and colorful reports.

Automated robustness testing at the UI level