Free browser plugin to measures page load time and displays it in the toolbar.

Built for developers and testers alike, SoapUI is the only open source tool that covers the entire testing spectrum (functional, security, load, mocking).

Test the Performance of Your Website Under Load

Anyone on your team can load test with instant playback, an easy-to-use interface, and real browsers for reliable data.

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.

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