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.

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

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

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

Tether is a bug reporting tool for teams. With Tether, teams can report bugs directly on any website using our screenshot and recording tools. Teams can manage feedback from their Tether dashboard or push the feedback anywhere via our integrations.

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