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

Fully integrated API and web service testing capabilities that automate end-to-end functional API testing.

Design, debug, and test APIs locally or in the cloud

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.

Browser and Mobile Automation Test Framework for Node.js

HyperTest is a no-code test automation tool that regresses all your APIs by auto-generating integration tests using your network traffic, also giving a way to reproduce these failures inside actual user-journeys.