Bruno is a Fast and Git-Friendly Opensource API client, aimed at revolutionizing the status quo represented by Postman, Insomnia and similar tools out there.

A screenshot/screenvideo tool! Also allows you to do basic alterations to the screenshots (arrows, blur, ...)

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

SeleniumBase Case Plans is Test Case Management Software that uses Markdown tables for displaying test plans directly in GitHub (and other source code management systems that support Markdown format).

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

A super fast way to QA. Browser extension for capturing and reporting bugs 20x faster. A screen capture tool.