SikuliX version 2.0.0+ (2019+)
Programmer-friendly testing framework for Java and the JVM
The OWASP ZAP core project
Testing Kotlin and Java annotation processors, compiler plugins
Flexible, lightweight multi-language test reporting tool
SoapUI is a free and open source cross-platform functional testing
Test automation made simple
Most popular Mocking framework for unit tests written in Java
Coverage-guided, in-process fuzzing for the JVM
State of the art mutation testing system for the JVM
Lightweight service virtualization/ API simulation / API mocking tool
API automation and load testing framework
Property-based testing for Scala
Python version of the Playwright testing and automation library
Gateway service providing dynamic routing, monitoring and more
Desktop app that helps you craft Gatling load-testing simulations
Powerful, elegant and flexible test framework for Kotlin
Cucumber for Ruby
.NET version of the Playwright testing and automation library
Modern concurrency tools including agents, futures, promises, etc.
The Open Source Test Automation Platform
Android unit testing framework
Optimizer for mobile applications
Java GUI-Less browser, supporting JavaScript, to run against web pages
Database Subsetter and Relational Data Browser