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

The Apache JMeter™ application is open source software, a 100% pure Java application designed to load test functional behavior and measure performance. It was originally designed for testing Web Applications but has since expanded to other test functions.

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

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

Achieve effortless quality with zero coding, zero maintenance, and the autonomous power of the world's first open-source testing agent.

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