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KDE on Cygwin is the port of Qt and KDE to Windows using Cygwin, the POSIX emulation layer for Windows, and the Cygwin XFree86 server. We think that KDE is a great desktop and has the opportunity to be a big player in the 'desktop environment' area. One of the main reasons for this is because of the famous Qt library, which is designed to be very platform independent and has already been ported to many operating systems. Hence porting KDE applications from one UNIX derived operating system to another is relatively painless. The one operating system this doesn't hold true for is Windows.