Now continued as OculiX — see oculix.org
Programmer-friendly testing framework for Java and the JVM
SoapUI is a free and open source cross-platform functional testing
The OWASP ZAP core project
Flexible, lightweight multi-language test reporting tool
Test automation made simple
Coverage-guided, in-process fuzzing for the JVM
SoloPi Automated Testing Tool
Most popular Mocking framework for unit tests written in Java
Desktop app that helps you craft Gatling load-testing simulations
Python version of the Playwright testing and automation library
The Open Source Test Automation Platform
Android unit testing framework
Gateway service providing dynamic routing, monitoring and more
Optimizer for mobile applications
State of the art mutation testing system for the JVM
API automation and load testing framework
Lightweight service virtualization/ API simulation / API mocking tool
Property-based testing for Scala
Cucumber for Ruby
.NET version of the Playwright testing and automation library
Powerful, elegant and flexible test framework for Kotlin
Modern concurrency tools including agents, futures, promises, etc.
Simple example of draw and rotate 3D box
Java GUI-Less browser, supporting JavaScript, to run against web pages