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

Free and Open Source, Distributed, RESTful Search Engine

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.

A powerful 🚀 Android chart view / graph view library, supporting line- bar- pie- radar- bubble- and candlestick charts as well as scaling, panning and animations.

An image loading and caching library for Android focused on smooth scrolling

Netty project - an event-driven asynchronous network application framework

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

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

Conductor is an event driven agentic orchestration platform providing durable and highly resilient execution engine for applications and AI Agents

A distributed task scheduling framework.（分布式任务调度平台XXL-JOB）

Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.

Telegram for Android source

Event bus for Android and Java that simplifies communication between Activities, Fragments, Threads, Services, etc. Less code, better quality.

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

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

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

Ip2region is an offline IP-to-Region localization library and IP data management framework with both IPv4 and IPv6 supports, 10-microsecond level query efficiency, xdb search client for many progra…

High Performance Inter-Thread Messaging Library

A fast dependency injector for Android and Java.

🚌 The IK Analysis plugin integrates Lucene IK analyzer into Elasticsearch and OpenSearch, support customized dictionary.

Modular and customizable Material Design UI components for Android

An Android library for managing images and the memory they use.

Powerful and flexible library for loading, caching and displaying images on Android.

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

Stetho is a debug bridge for Android applications, enabling the powerful Chrome Developer Tools and much more.

The Most Powerful Swipe Layout!

An Android library that allows you to easily create applications with slide-in menus. You may use it in your Android apps provided that you cite this project and include the license in your app. Th…

A barebones WebSocket client and server implementation written in 100% Java.