40个：http://blog.csdn.net/wave_1102/article/details/12174025
http://www.csdn.net/article/2013-07-15/2816230-GitHub-iOS-open-source-projects-three
http://www.cocoachina.com/industry/20130524/6273.html
600个开源项目：http://github.ibireme.com/github/list/ios/
代码库：http://code.cocoachina.com/index/1/1/1