You can write native Cocoa apps with MacRuby that have Mac Look and Feel, with better than acceptable performance. There are clean, high-level Ruby wrappings o

You can write native Cocoa apps with MacRuby that have Mac Look and Feel, with better than acceptable performance. There are clean, high-level Ruby wrappings of UIKit classes, see HotCocoa: http://macruby.com/hotcocoa.html http://macruby.com/hotcocoa.html, although it's not clear to me how extensive this part of MacRuby is.