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

libbpg (copy of the source code for easy access)

Virtual Engine for Android(Support 14.0 in business version)

A lite library, you can make your project depend it easily, and your project will be UNDEAD (contains api from 9 to 23, lol).

PAC/Dnsmasq/Wingy file Generator, working with gfwlist, support custom rules.

Gmail style MultiAutoCompleteTextView for Android

A plugin framework on android,Run any third-party apk without installation, modification or repackage

Android-Iconics - Use any icon font, or vector (.svg) as drawable in your application.

Rhino is an open-source implementation of JavaScript written entirely in Java

An Android library supports badge notification like iOS in Samsung, LG, Sony and HTC launchers.

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

A camera app using the new camera2 API in Android Lollipop

Views and Drawable for displaying animated GIFs on Android

[UNMAINTAINED] Emoji (Unicode) and emoticon support for Java and Android

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

A mini linux container.

Proof of concept Android WebView implementation based on Chromium code

A curated list of awesome awesomeness

中文版 Apple 官方《Swift 编程语言》

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

A iOS like slide back Activity framework.

Sugared List Animations Sample

The package manager for browsers

You can create animation in UIKit just like cocos2d's CCAction (also API in Sprite Kit without iOS7). It's really easy if you'll play a animation sequence.

[已废弃]中文图标字体，可用于 Web 或 iOS，同时提供了国内各种常用网站、应用的徽标 SVG 源文件。

SegmentFault官方App

Square’s meticulous HTTP client for the JVM, Android, and GraalVM.

An OSX style genie effect inside your iOS app.

Runtime Code Injection for Objective-C & Swift