I was checking out this new web site by these guys called 280 North. Essentially, they built a web version of Keynote and they are calling it 280Slides. It looks really slick/nice and they did a great job with the UI.

Out of curiosity, I called up Firebug to see what Javascript framework was used. I was quite surprised to find a lot of requests for ‘.j’ files. It turns out that these guys loved Objective-C so much that they wrote their app in a form of Objective-C which I am assuming is translated to Javascript.

Very Cool!

Here is a sample of some of their ‘.j’ files:

http://280slides.com/Editor/1212695713/DocumentController.j

http://280slides.com/Editor/1212695713/main.j