Free & OpenSource REST API Testing Tool for all levels in a Test Pyramid

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

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

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

Best "simple" screen capturing app (Mac and Windows) because it creates animated gifs that attach to bugs easily. Simple because it works a lot like snippy to capture screen areas

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