Would you like to join SKYPE talking with topic iPhone development ?

I am interested in iPhone development , and really hope to know more friends who focus ondevelopment or just business , I really hope to study from each other, and inspire from each other.

I have some experience to migrate opencv to iPhone, and some barcode scanner on iPhone.

Appreciate to  talk with SKYPE.
If you live in Shanghai,China, I can buy you coffee at StartBucks to meet up.

EmailMe : forrest.shi#gmail.com  (replace # with @ )
SkypeMe: forrest.shi

I also like iphone very much.
but I dont live in shanghai.

Here is one awesome open source app : wordpress on iPhone.

Check out :

http://iphone.wordpress.org/development/  

TwitterFon is the little brother of TwitterFon Pro:

TwitterFon is a simple, clean, easy to use, and is a superfast Twitter client for your iPhone and iPod Touch.

It was open source up to version 1.4. Although the current version is 1.5, there’s still a lot of good stuff:

Use of Twitter’s API
JSON
WebViews
Chat Bubble
Custom search
Progress window

code :  http://github.com/jpick/twitterfon

thank you for sharing ;)

Some open source on iPhone:

http://code.google.com/p/iui/ (UI library for Safari iPhone apps)
http://iwebkit.net/ (another UI library for Safari)
http://code.google.com/p/oolongengine/ (Google engine for iPhone)
http://www.smartfoxserver.com/labs/API/ (SmartFoxServer multiplayer engine details for their new iPhone/iPod Touch API)
http://code.google.com/p/cocos2d-iphone/ (Objective-C based 2D engine for the iPhone)
http://www.unity3d.com (3D engine for iPhone and other platforms)
http://blogs.unity3d.com/
http://iphonedevelopment.blogspot.com/2008/12/updated-opengl-es-xcode-project.html (OpenGL template for Xcode)
http://www.garagegames.com/products/consoles (2d and 3d engines for iPhone)
http://www.garagegames.com/products/torque-2d/iphone
http://www.stonetrip.com/ (3d development tool)
http://code.google.com/p/cocoahttpserver
http://sio2interactive.com/HOME/HOME.html (free open source 3D engine for iPhone)
http://homepage.mac.com/aglee/downloads/appkido.html (great alternative for the class/library browser)
http://code.google.com/p/simple-iphone-image-processing/
http://code.google.com/p/appsales-mobile/ (locally built app for gathering metrics on your app)
http://ioquake3.org/
http://en.wikipedia.org/wiki/Id_Tech_3
http://unifycommunity.com/ (community for Unity3d development)
http://www.fmod.org/index.php/products/fmodex (music/audio engine)
http://code.google.com/p/simple-iphone-image-processing/
http://groups.google.com/group/cocos2d-iphone-discuss
http://monoclestudios.com/cocos2d_whitepaper.html
http://www.neverreadpassively.com/2009/03/review-of-iphone-3d-engines.html
http://code.google.com/p/bullet/ (physics engine)
http://www.box2d.org/ (physics engine)
http://digitalbreed.com/2008/3d-engines-on-iphone-ipod
http://wiki.slembcke.net/main/published/Chipmunk (physics engine)

Useful open source libraries for IPhone Development

http://www.codingventures.com/2008/12/useful-open-source-libraries-for-iphone-development/