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.

Easy on-device screenshot testing for Android.

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

Render your Android screens without a physical device or emulator.

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

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