Michel Fortin has announced the first public release of a project that allows D and Objective-C to interact, opening up the creation of Cocoa applications for D users on Mac. This is big news, methinks. There are still some kinks to work out. If you are willing, and able, get on over there and give Michel a hand on testing and bugfixing. When I finally do get my Mac, I’ll be grateful 
Technorati Tags: D Programming Language, Objective-C, Mac
Just as a sidenote, there is docoa which I took over from a dead project with the same name. I incorporated a few things from it, but basically mine is a very much useable interface to cocoa:
http://www.dsource.org/projects/docoa