Design patterns implemented in 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.

Getting Started with Spring Boot 3:

Render After Effects animations natively on Android and iOS, Web, and React Native

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

Open Source Identity and Access Management For Modern Applications and Services

Telegram for Android source

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

Bind Android views and callbacks to fields and methods.

Desktop/Android/HTML5/iOS Java game development framework

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

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

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

Implementation of ImageView for Android that supports zooming, by various touch gestures.

High Performance Inter-Thread Messaging Library

A fast dependency injector for Android and Java.

Modular and customizable Material Design UI components for Android

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

Quarkus: Supersonic Subatomic Java.

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

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…

Android Transition animations explanation with examples.

Generate diagrams from textual description

greenDAO is a light & fast ORM solution for Android that maps objects to SQLite databases.

Cute view animation collection.

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

Apereo CAS - Identity & Single Sign On for all earthlings and beyond.