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

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).

For those more detailed screen recordings like demos as well as bugs. Has a built in editor.

Handle large text files and files with broken BOM marks and more with lightweight feel.

Checks web UI for browser compatibility (Compliance with Can I Use?)