Objective-J allows developers to create web applications using an Objective-C like framework called Objective-J which is implemented in JavaScript, making apps cross-platform to run in any web browser. It discussed frameworks for Objective-J development like SproutCore and Capuccino. The presentation on creating cross-platform apps with Objective-J was itself created using an iPhone app.

1. Objective-C
Cocoa for the Web!

2. What is it?
Create web apps by using a full-fledged
JavaScript Obective-J framework.

3. What is Objective-J?
It's like Objective-C for Mac OS X, but
implemented in JavaScript.
Apps become cross-platform. All you need
is a web browser.

4. Frameworks
SproutCore
Capuccino

5. Thanks for reading! This presentation was
created in Keypoint on iPhone.