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

The Java gRPC implementation. HTTP/2 based RPC

:zap: Universal Workflow Orchestration Platform — Code in any language, run anywhere. 900+ plugins for data, infrastructure, and AI automation.

High quality UI controls to complement the core JavaFX distribution

Graphical Java application for managing BibTeX and BibLaTeX (.bib) databases

A Gateway built on Spring Framework and Spring Boot providing routing and more.

Catch common Java mistakes as compile-time errors

A private messenger for Android.

Most popular Mocking framework for unit tests written in Java

The official home of the Presto distributed SQL query engine for big data

An unofficial open source Reddit client for Android.

PowerMock is a Java framework that allows you to unit test code normally regarded as untestable.

Annotation processor to create immutable objects and builders. Feels like Guava's immutable collections but for regular value objects. JSON, Jackson, Gson, JAX-RS integrations included

eXist Native XML Database and Application Platform

Mirror of Apache Cassandra

:satellite: :cloud: :notes:Airsonic, a Free and Open Source community driven media server (fork of Subsonic and Libresonic)

H2 is an embeddable RDBMS written in Java.

Spring Framework

Mirror of Apache Kafka

The Janssen Project is a home for open source IAM components, featuring Auth Server (OAuth/OpenID), Agama low-code identity orchestration, and the Cedarling policy decision point. The "Janssen Server" distributions bundle IAM components under one control

A compact and highly efficient workflow and Business Process Management (BPM) platform for developers, system admins and business users.

Realm is a mobile database: a replacement for SQLite & ORMs

Traccar GPS Tracking System

Autopsy® is a digital forensics platform and graphical interface to The Sleuth Kit® and other digital forensics tools. It can be used by law enforcement, military, and corporate examiners to investigate what happened on a computer. You can even use it to

Unleash the power of Java - JBang Lets Students, Educators and Professional Developers create, edit and run self-contained source-only Java programs with unprecedented ease.

Spring Batch is a framework for writing batch applications using Java and Spring

Spoon is a metaprogramming library to analyze and transform Java source code. :spoon: is made with :heart:, :beers: and :sparkles:. It parses source files to build a well-designed AST with powerful analysis and transformation API.

Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 8 and above, brought to you by Google.

AnkiDroid: Anki on Android

A fast dependency injector for Android and Java.

cBioPortal for Cancer Genomics

A java client library to access Exchange web services. The API works against Office 365 Exchange Online as well as on premises Exchange.

Open-Source Web UI for Apache Kafka Management

ODK Collect is an Android app for filling out forms. It's been used to collect billions of data points in challenging environments around the world. Contribute and make the world a better place! ✨📋✨

ODK Collect is an Android app for filling out forms. It's been used to collect billions of data points in challenging environments around the world. Contribute and make the world a better place! ✨📋✨

FastHub the ultimate GitHub client for Android.

Apache Flink

Cross-platform framework for building truly native mobile apps with Java or Kotlin. Write Once Run Anywhere support for iOS, Android, Desktop & Web.

A podcast manager for Android

A Java serialization/deserialization library to convert Java Objects into JSON and back

Java libraries for writing microservices

Distributed SQL transaction & query engine for data sharding, scaling, encryption, and more - on any database.

Desktop/Android/HTML5/iOS Java game development framework

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Insanely easy way to work with Android Database.

Mirror of Apache RocketMQ

Multi-platform transparent client-side encryption of your files in the cloud

Easily make RESTful web services for time series reporting with Big Data analytics engines like Druid and SQL Databases.

OpenRocket simulation software

Spring HATEOAS - Library to support implementing representations for hyper-text driven REST web services.

"Maven-node-grunt-gulp-npm-node-plugin to end all maven-node-grunt-gulp-npm-plugins." A Maven plugin that downloads/installs Node and NPM locally, runs NPM install, Grunt, Gulp and/or Karma.