MacRuby takes the "almost" out of "almost a desktop experience." With MacRuby, you can write real Mac OS X desktop applications with Ruby. MacRuby is a Ruby interpreter built by Apple on top of Objective-C. Unlike other scripting interfaces to the Cocoa frameworks, MacRuby objects are fully functional peers of Objective-C objects with no translation layer. This means that your Ruby applications can do almost anything a compiled application could do, and at near-native speed.