OpenGL ES的各种尝试，有详细的博客。

FCC China open source codebase and curriculum. Learn to code and help nonprofits.

A powerful cross-platform UI toolkit for building native-quality iOS, Android, and Progressive Web Apps with HTML, CSS, and JavaScript.

The easiest way to use image circulate，超简单好用的图片轮播框架

Chisel is a collection of LLDB commands to assist debugging iOS apps.

Harness the power of AutoLayout NSLayoutConstraints with a simplified, chainable and expressive syntax. Supports iOS and OSX Auto Layout

RestKit is a framework for consuming and modeling RESTful web resources on iOS and OS X