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

Automate API workflows. Chain HTTP requests. Validate. Zero code.

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

Robotium is an Android test automation framework that has full support for native and hybrid applications.

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

Requestly is an open-source tool that simplifies API development, testing, mocking, and integration for developers and QAs.