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

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

A tool for reverse engineering Android apk files

RxJava bindings for Android

IntelliJ IDEA & IntelliJ Platform

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

A fast dependency injector for Android and Java.

A high performance caching library for Java

Modular and customizable Material Design UI components for Android

A circular ImageView for Android

✔️ Simple, pretty and powerful logger for android

Android Transition animations explanation with examples.

Tools to work with android .dex and java .class files

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

Cute view animation collection.

The Most Powerful Swipe Layout!

Image Cropping Library for Android

A declarative API to handle Android runtime permissions.

Fast Android Development. Easy maintainance.

An Android transformation library providing a variety of image transformations for Glide.

Simplify Android M system permissions

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

Java Native Access

Custom fonts in Android the easy way...

A Material Design ViewPager easy to use library

Android library (AAR). Highly configurable, easily extendable deep zoom view for displaying huge images without loss of detail. Perfect for photo galleries, maps, building plans etc.

Charts library for Android compatible with API 8+, several chart types with scaling, scrolling and animations 📊

Learning RxJava for Android by example