k6
k6 Open Source is designed for load testing. Extensible to support other types of testing.
Similar Tools
Locust is an open source performance/load testing tool for HTTP and other protocols. Its developer-friendly approach lets you define your tests in regular Python code. Locust tests can be run from command line or using its web-based UI
Built for developers and testers alike, SoapUI is the only open source tool that covers the entire testing spectrum (functional, security, load, mocking).
The Apache JMeterâ„¢ 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.
Free and open source. Solve accessibility issues before they reach your customers.
Automation Test Reporting. OSS, Language & Framework agnostic
See autonomous QA in action with BearQ—from exploration to test generation. Trial access included.
Test complex APIs and microservices smarter—with confidence.
Better than a generic video, see YOUR test, live, ready to show you what matters most: quality at scale.
QALS Summer'26: Scale AI testing from pilots to production with BrowserStack’s AI Test Platform