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

Screenshot testing library for Android.

Gatling is a powerful open-source load testing solution that integrates with your development pipeline. It includes a web recorder and colorful reports.

Checks web UI for browser compatibility (Compliance with Can I Use?)

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

Render your Android screens without a physical device or emulator.