Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

Ghidra is a software reverse engineering (SRE) framework

Spring Framework

Google core libraries for Java

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

The java implementation of Apache Dubbo. An RPC and microservice framework.

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

Apache Kafka - A distributed event streaming platform

Browse media content with your own rules on Android TV

Telegram for Android source

Apache Flink

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

JDK main-line development https://openjdk.org/projects/jdk

GraalVM compiles applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀

IntelliJ IDEA & IntelliJ Platform

RxJava bindings for Android

A fast dependency injector for Android and Java.

Suite of tools for deploying and training deep learning models using the JVM. Highlights include model import for keras, tensorflow, and onnx/pytorch, a modular and tiny c++ library for running mat…

Very spicy additions to the Java programming language.

Free implementation of Play Services

A scalable web crawler framework for Java.

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.

Algorithms, 4th edition textbook code and libraries

Catch common Java mistakes as compile-time errors

Haven is for people who need a way to protect their personal spaces and possessions without compromising their own privacy, through an Android app and on-device sensors

Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more.

⚠️ Processing moved to processing/processing4 ⚠️

Statistical Machine Intelligence & Learning Engine

vʌvr (formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.