The OWASP ZAP core project
SoapUI is a free and open source cross-platform functional testing
Load testing tool for analyzing and measuring performance of services
Programmer-friendly testing framework for Java and the JVM
Flexible, lightweight multi-language test reporting tool
Gateway service providing dynamic routing, monitoring and more
State of the art mutation testing system for the JVM
Lightweight service virtualization/ API simulation / API mocking tool
Most popular Mocking framework for unit tests written in Java
Python version of the Playwright testing and automation library
Cucumber for Ruby
Coverage-guided, in-process fuzzing for the JVM
Test automation made simple
API automation and load testing framework
Powerful, elegant and flexible test framework for Kotlin
Modern concurrency tools including agents, futures, promises, etc.
The Open Source Test Automation Platform
.NET version of the Playwright testing and automation library
Testing Kotlin and Java annotation processors, compiler plugins
Android unit testing framework
Optimizer for mobile applications
Benchmarking tool
Java GUI-Less browser, supporting JavaScript, to run against web pages
Database Subsetter and Relational Data Browser
Easy to set up bug tracking with Java