Wine is capable of running some winforms-based Windows applications on Mac OSX. When it works as intended, all you have to do is install Wine on the Mac, and then it can run your exe. Of course this won't always work perfectly, and it won't have the polish of a native Mac app, but for simpler Winforms apps it should work. Well, as the developers state, Wine is a 'compatibility layer' that allows you to run Windows-based apps on your Mac. Basically, this tool will trick your programs into thinking they are running on a Windows OS by translating their requests for system resources like memory or disk space.