[tep]

I've seen really good Mac developers try to make a Windows port of their software. Usually, the Windows version looks terrible and the interface atrocious. Not because the mac developer is lazy, it's that the API's for Windows (whether using Winforms, Win32, or WPF) don't offer elegant animations and UI elements, so the interface ends up looking clunky and odd.

Take 1Password from Agile. It's a superb interface on Mac but when you look at the WIndows version, it's obvious the Windows elements don't translate well and it looks ugly in comparison.