Gentoo/win32 download Area
Warning: This is a hacked and patched version of portage. Use at your own risk!
A new version has been released. Feedback appreciated.
Download portage snapshot
KDE 3.1.1 has been ported to the cygwin environment. During my limited testing it has performed very well. Having an ebuild for this would be awfully neat ... and the KDE-Cygwin project is already working on it :-))
Both OpenOffice and mplayer have native windows ports.