Apple iOS Developers Center
Our Apps Framework Usage
AddressFind	ShareKit and InAppSettingsKit
CamsNearby	ShareKit and InAppSettingsKit
iMapMe	ShareKit and InAppSettingsKit
iMySystem	ShareKit and InAppSettingsKit
PhotosShare	ShareKit, InAppSettingsKit, ZipArchive, Dropbox SDK and Flickr SDK.
StreamTunes	InAppSettingsKit
Pic2Flickr	InAppSettingsKit and Flickr SDK
MarkelSoft iOS mobile universal apps for iPad, iPhone & iPod Touch

Must-Have Developer
iOS Frameworks & Classes
(for Objective-C)

1. ShareKit - add full sharing capabilities to your app for Facebook, Twitter, Instapaper, Twitter, Tumblr, Instapaper, Pinboard, Read It Later, Google Reader, Delicious and Email.
2. InAppSettingsKit - easily add in-app settings to your app.
3. Route-Me - brings slippery maps to iOS.
4. ZipArchive - objective-C class for adding ZIP capability to your app.
5. LFWebAPIKit - useful HTTP support for your app.
6. Dropbox SDK - add Dropbox functionality for sending or acquiring a file.
7. Flickr SDK - add Flickr functionality for sending or acquiring photos.
8. DLWebView - drop-in web browser component.
9. MGTwitterEngine - objective-C class for adding Twitter support.
10. PowerPlot - a mobile visualization library for scientific and  business graphics.
11. Three20 - open source objective-C library used by dozens of well-know brands including Facebook, Posterous, Pulse, Meetup.com and SCVNGR.
12. Other iOS Frameworks