One of the goals for MvvmCross v3 was support for MonoMac and Xamarin.Mac
Kevin - @deapsquatter - at CentraStage has been pushing this work forwards for over 6 months now and has blogged about specific parts like Mac NSTableView support
More recently, Tim - @tofutim - at loqu8 has been pushing forwards with PCL code from the tip of v3.
Together, they've got our .mac support into a good state - as you can see:
This is .... of course.... awesome - doubly so! And I'm delighted to give Tim a first badge of awesomeness and Kevin his 4th