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

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

eXist Native XML Database and Application Platform

🔥🔥🔥AI-driven database tool and SQL client, The hottest GUI client, supporting MySQL, Oracle, PostgreSQL, DB2, SQL Server, DB2, SQLite, H2, ClickHouse, and more.

Traccar GPS Tracking System

: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

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

The Java gRPC implementation. HTTP/2 based RPC

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

Spring Boot

Most popular Mocking framework for unit tests written in Java

Catch common Java mistakes as compile-time errors

A private messenger for Android.

SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code.

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

An unofficial open source Reddit client for Android.

Mirror of Apache Cassandra

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

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

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

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

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

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.

Spring Framework

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

A fast dependency injector for Android and Java.

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

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.

AnkiDroid: Anki on Android

Open-Source Web UI for Apache Kafka Management

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

FastHub the ultimate GitHub client for Android.

Mirror of Apache Kafka

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

cBioPortal for Cancer Genomics

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! ✨📋✨

Desktop/Android/HTML5/iOS Java game development framework

Apache Flink

A podcast manager for Android

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

"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.

Insanely easy way to work with Android Database.

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

Mirror of Apache RocketMQ

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

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

Apache Solr open-source search software