PhoneGap is a development tool that allows web developers to take advantage of the core features in the iPhone, Android, and Blackberry SDK using JavaScrip
Use your mouse to drag the lists up and down, then try to flick them like you’re supposed to on the iPhone. The back button on the phone is also enabled.
cocos2d is a framework for building 2D games, demos, and other graphical/interactive applications.
ObjectiveResource is an Objective-C port of Ruby on Rails’ ActiveResource. It provides a way to serialize objects to and from Rails’ standard RESTful web-services (via XML or JSON) and handles much of the complexity involved with invoking web-services of any language from the iPhone.
Rhomobile’s open source mobile application framework Rhodes lets you quickly build mobile interfaces to enterprise applications. These are true native device applications: They work against synced local data and take advantage of device capabilities such as GPS and PIM access.
With VixML you can create interactive experiences without being a developer, If you can write a Web page, you can write VixML. It’s a simple, XML-based format for creating content for iPhone apps.