Design patterns implemented in Java

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

All Algorithms implemented in Java

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.

Free universal database tool and SQL client

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

Netty project - an event-driven asynchronous network application framework

an easy-to-use dynamic service discovery, configuration and service management platform for building cloud native applications.

Mirror of Apache Kafka

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

Open Source Identity and Access Management For Modern Applications and Services

Desktop/Android/HTML5/iOS Java game development framework

Redisson - Valkey and Redis Java client. Complete Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, L…

Jenkins automation server

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

This project is deprecated and stale. The latest ExoPlayer code is available in https://github.com/androidx/media

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

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

MyBatis SQL mapper framework for Java

Open-source IoT Platform - Device management, data collection, processing and visualization.

A fast dependency injector for Android and Java.

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

Zipkin is a distributed tracing system

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

Most popular Mocking framework for unit tests written in Java

Vert.x is a tool-kit for building reactive applications on the JVM

Arduino IDE 1.x

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…