280 Slides is a brand new rich internet application which leverages on both Cocoa and the Objective-C runtime that runs entirely in JavaScript via a web browser. Sounds impressive? It is.
Built by the folks at 280 North, 280 Slides is a really impressive presentation app that looks and works very similarly to Apple’s Keynote. Users [...]

Cocoa is Apple Inc.’s native object-oriented application programming environment for the Mac OS X operating system. It is one of five major APIs available for Mac OS X; the others are Carbon, Toolbox (for the obsolete Classic environment), POSIX (for the BSD environment), and Java.
Cocoa applications are typically developed using the development tools provided by [...]