Skia is a complete 2D graphic library for drawing Text, Geometries, and Images.

Reveal CSS animation as you scroll down a page

几行代码快速集成二维码扫描功能

Durban image cropping library for Android.

Java OCR 识别组件（基于Tesseract OCR 引擎）。能自动完成图片清理、识别 CAPTCHA 验证码图片内容的一体化工作。Java Image cleanup, OCR recognition component (based Tesseract OCR engine, automatically cleanup image and identification CAPTCH…

A fast dependency injector for Android and Java.

A nicer iOS UI component for picking date and time

RichEditor

pdfium for android( >= API 14 ) binding

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

Google Protocol Buffers for Objective-C

A library to show emoji in TextView, EditText (like WhatsApp) for Android

扩展支持多种Item布局的情况

a nice progressbar style

Netroid is a Http Framework for Android that based on Volley

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

Android performance test tool-CPU,memory,network traffic,starting time,battery current and status

A similar control to the pull down to refresh control created by atebits in Tweetie 2.

An XMPP Framework in Objective-C for Mac and iOS

A UINavigationController subclass that brings about a more vivid, brighter UINavigationBar.

Sample rendering for the Day One app markdown style.

iLBC Android