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

Agentic QE Fleet is an open-source AI-powered quality engineering platform designed for use with Claude Code, featuring specialized agents and skills that surface quality-related information for a product at any stage of the SDLC.

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

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.

Screenshot testing library for Android.

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