Help out your favorite open source projects and become a better developer while doing it.

space station management/tycoon/trader game. made for fun and practice.

MicroProfile Rest Client

A simple sound recording Android app implementing Material Design

Joda-Time is the widely used replacement for the Java date and time classes prior to Java SE 8.

A complete travel guide!

Coverage-guided, in-process fuzzing for the JVM

Automatically exported from code.google.com/p/sshxcute

Open Source LaTeX editor that supports remote collaboration

Java Applications of Illarion (Client, Mapeditor, easyNPC Editor, Downloader)

Automatically exported from code.google.com/p/flex-ui-selenium

Official GeoServer repository

SmallRye implementation of Eclipse MicroProfile OpenAPI

QuickPerf is a testing library for Java to quickly evaluate and improve some performance-related properties

Official Todo.txt Android app for managing your todo.txt file stored in Dropbox.

Norconex HTTP Collector is a flexible web crawler for collecting, parsing, and manipulating data from the Internet (or Intranet) to various data repositories such as search engines.

The Official SendGrid Led, Community Driven Java API Library

Compose validation rules in the language you use every day, openVALIDATION handles code creation for you.

An app that provides daily headlines from popular news source.

Spring Integration for GraphQL

A library provides an easy way to show skeleton loading view like Facebook and Alipay

Next generation desktop application development platform for the JVM

A classic inspired shoot em' up game written in Java with JavaFX and FXGL.

LITIENGINE 🕹 The pure 2D java game engine.

QA automation utilities and project generator

Main code and data development for pcgen program release

Exercism exercises in Java.

Scheduling / Quartz integration for Dropwizard

Shipr Social is the Multi Platform Chat Project for Developers

A Java application which helps people to manage their apartment.

An attempt to reimplement the Minecraft Forge API on Fabric

The Android version of the Hydra app

This is mavenised Luke: Lucene Toolbox Project

Document Ingestion Framework for Search Systems

Apache Flink Stateful Functions

Android Customizable Reader - Librelio Digital Publishing Suite

The JMeter Maven Plugin

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

Clock As a Service

An enhanced Guava-based event bus with emphasis on Android support.

REST API based application that manages user databases

Fluent Object-Oriented Wrapper of JDBC

Apache Commons IO

Restful CRUD Blog API using Spring Boot, Spring Security, JWT, Mysql, JPA

Constretto is a versatile configuration toolkit for the JVM implemented in Java

Mirror of Apache Olingo

A lightweight Java library for adding watermarks to various file types, including PDFs and images

The best IKVM.NET fork ever!

JUnit Rule for providing an embedded in-memory database for your tests