It’s basically an attempt at a web port of the Cocoa framework, and to bridge the gap a bit more between the two it has it’s own language, Objective-J, which is similar to Objective-C, which is used for building Cocoa apps on Mac OSX. This means you can create gorgeous looking applications very easily, and you don’t need to worry about DOM, HTML, CSS etc, it takes care of all of that for you.
The big attraction for me is to give myself a bit more familiarity with the Cocoa framework and Objective-C. I’ve wanted for a long time to be able to build apps for Mac OSX, but have never been able to figure it out. This stems from my mindset as a web developer – I believe the process of building for the web and for the desktop are very different. Cappuccino goes a good way to brdiging this gap, so hopefully the next time I launch up XCode to build something it will all make a bit more sense.
There are still a lot of things I need to figure out with Cappuccino, but hopefully the answers will become more apparent as mnore documentation and examples appear. I’m really excited to actually build a full app using it. Just need to find the time now!