#1 Locally hosted web application that allows you to perform various operations on PDF files

Dex to Java decompiler

Termux - a terminal emulator application for Android OS extendible by variety of packages.

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

Telegram for Android source

Bind Android views and callbacks to fields and methods.

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

Desktop/Android/HTML5/iOS Java game development framework

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

A tool for reverse engineering Android apk files

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

Tinker is a hot-fix solution library for Android, it supports dex, library and resources update without reinstall apk.

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

Modular and customizable Material Design UI components for Android

A simple app to use Xposed without root, unlock the bootloader or modify system image, etc.

Picture Selector Library for Android or 图片选择器

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

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

VasSonic is a lightweight and high-performance Hybrid framework developed by tencent VAS team, which is intended to speed up the first screen of websites working on Android and iOS platform.

Fast Android Development. Easy maintainance.

A Java API for generating .java source files.

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

Virtual Engine for Android(Support 14.0 in business version)

Android开源弹幕引擎·烈焰弹幕使 ～

RecyclerView? ListView or ViewGroup? No, it's Canvas! Ultra performance and free customization interface! Vertical and horizontal, Fast rendering and extremely low memory. Android上一个优雅、万能自定义UI、仿iOS…

A powerful and lightweight plugin framework for Android

Android loading animations

proguard resource for Android by wechat team

Epoxy is an Android library for building complex screens in a RecyclerView