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

Render your Android screens without a physical device or emulator.

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.

Monosnap screenshot tool for Mac and PC with own cloud storage. Take screenshots, record videos and upload files directly to the cloud. Just in one click.

Cloud-scale performance testing. Effortless load testing and synthetic checks at scale. Cloud-native and open-source. The next evolution of performance testing.

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