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

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

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

YATTIE exists to help make tester's lives easier. Ideally, it should remove friction from the exploratory testing process - everywhere from gathering evidence to submitting reports.

Unifying API testing, API Performance testing, API Mocks and UI testing.

Free and open source. Solve accessibility issues before they reach your customers.