Pentaho Data Integration ( ETL ) a.k.a Kettle
State of the art mutation testing system for the JVM
Browser automation framework and ecosystem
Apache Maven Surefire
Testcontainers is a Java library that supports JUnit tests
Programmer-friendly testing framework for Java and the JVM
Android unit testing framework
Most popular Mocking framework for unit tests written in Java
TestNG testing framework
Test automation made simple
Java language binding for writing Appium Tests
Fluent assertions for Java and Android
OkBuck is a gradle plugin that lets developers build systems
Build great things at any scale
Flexible, lightweight multi-language test reporting tool
Fast, scalable, multi-language and extensible build system
Source for the TechEmpower Framework Benchmarks project
The Enterprise-ready testing and specification framework
Maven plugin for running and creating Docker images
Solutions for some common algorithm problems written in Java
API automation and load testing framework
Free templates for AWS CloudFormation
Eclipse Collections is a collections framework for Java
A durable Datalog implementation adaptable for distribution
The Open Source Test Automation Platform