iOS开发资料站

http://ivomynttinen.com/blog/the-ios-7-design-cheat-sheet/
http://ivomynttinen.com/ http://blog.sina.com.cn/s/articlelist_1605247797_0_1.html http://download.csdn.net/download/wangyang0726/4441573
http://blog.sina.com.cn/s/articlelist_1256141290_0_1.html
http://blog.csdn.net/dlangu0393/article/details/7214728
http://download.csdn.net/detail/wangjunhui1984/3271627 声音识别文章
http://download.csdn.net/detail/x1135768777/4271981 声音识别DEMO
http://wenku.baidu.com/view/7933717301f69e3143329432.html 声音匹配文章

一些开源项目：

扫描wifi信息：
http://code.google.com/p/uwecaugmentedrealityproject/
http://code.google.com/p/iphone-wireless/

条形码扫描：
http://zbar.sourceforge.net/iphone/sdkdoc/install.html

tcp/ip的通讯协议：
http://code.google.com/p/cocoaasyncsocket/

voip/sip：
http://code.google.com/p/siphon/
http://code.google.com/p/asterisk-voicemail-for-iphone/
http://code.google.com/p/voiphone/ 

three20
https://github.com/facebook/three20

google gdata
http://code.google.com/p/gdata-objectivec-client/

720全景显示panoramagl
http://code.google.com/p/panoramagl/

jabber client
http://code.google.com/p/ichabber/

PLBlocks
http://code.google.com/p/plblocks/

image processing
http://code.google.com/p/simple-iphone-image-processing/

json编码解码
http://code.google.com/p/json-framework

base64编码解码
http://code.google.com/p/google-toolbox-for-mac/source/browse/trunk/Foundation/?r=87

xml解析
https://github.com/schwa/TouchXML

安全保存用户密码到keychain中
https://github.com/ldandersen/scifihifi-iphone

加载等待特效框架(private api)
https://github.com/jdg/MBProgressHUD

http等相关协议封装
http://allseeing-i.com/ASIHTTPRequest

下拉刷新代码
https://github.com/enormego/EGOTableViewPullRefresh

异步加载图片并缓存代码
http://www.markj.net/iphone-asynchronous-table-image/

iphone TTS
https://bitbucket.org/sfoster/iphone-tts

iphone cook book 源码
https://github.com/erica/iphone-3.0-cookbook-
iphone正则表达式
http://regexkit.sourceforge.net/RegexKitLite/