Google core libraries for Java

Dex to Java decompiler

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

Bind Android views and callbacks to fields and methods.

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

A tool for reverse engineering Android apk files

RxJava bindings for Android

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

Modern Java - A Guide to Java 8

MIT Deep Learning Book in PDF format (complete and parts) by Ian Goodfellow, Yoshua Bengio and Aaron Courville

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

Cracking the Coding Interview 6th Ed. Solutions

OpenRefine is a free, open source power tool for working with messy data and improving it

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

A collection of samples demonstrating different frameworks and techniques for automated testing

This is a library with components of Android L to you use in android 2.2

Asynchronous socket, http(s) (client+server) and websocket library for android. Based on nio, not threads.

Material Design Music Player

Tiny, easily embeddable HTTP server in Java.

The usual Toast, but with steroids 💪

Source code for the Processing Core and Development Environment (PDE)

Generate Java types from JSON or JSON Schema and annotate those types for data-binding with Jackson, Gson, etc

The Physical Web: walk up and use anything

Barcode scanner library for Android, based on the ZXing decoder

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.

Barcode Scanner Libraries for Android

High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, Rust, C++, C.

An implementation of tap targets from the Material Design guidelines for feature discovery.

Android USB host serial driver library for CDC, FTDI, Arduino and other devices.