掃描wifi信息：
http://code.google.com/p/uwecaugmentedrealityproject/
http://code.google.com/p/iphone-wireless/
條形碼掃描：
http://zbar.sourceforge.net/iphone/sdkdoc/install.html
tcp/ip的通訊協議：
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 http://three20.info/
google gdata
http://code.google.com/p/gdata-objectivec-client/
720全景顯示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編碼解碼:http://code.google.com/p/json-framework
base64編碼解碼:http://code.google.com/p/google-toolbox-for-mac/source/browse/trunk/Foundation/?r=87
xml解析:
安全保存用戶密碼到keychain中:
加載等待特效框架(private api):
http等相關協議封裝:http://allseeing-i.com/ASIHTTPRequest
下拉刷新代碼:
異步加載圖片並緩存代碼:http://www.markj.net/iphone-asynchronous-table-image/
iphone TTS:
iphone cook book 源碼:
iphone正則表達式:http://regexkit.sourceforge.net/RegexKitLite/
OAuth認證: http://code.google.com/p/oauth/
http://code.google.com/p/oauthconsumer/
藍牙協議棧:http://code.google.com/p/btstack/
語音識別:http://www.politepix.com/openears/
ShareKit:http://www.getsharekit.com/install/
日曆控件:http://code.google.com/p/iphonecal/
zlib, openssl:http://code.google.com/p/ios-static-libraries/
