Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

Java dataframe and visualization library

Gnucash for Android mobile companion application.

An Implementation of the Jakarta RESTful Web Services Specification

Transactional messaging for microservices

Sagas for microservices

A project for experimental code that may someday appear in jfxtras.

An ORM for people who hate ORMs.

Fork of the official AWS SDK for Java, modified to work from within Google App Engine.

Examples to inject or intercept something with JAX-RS.