Foreign Linux: Run Linux binaries on Windows without drivers or modification
Cygwin is impressively complete - if you haven't checked in on it recently, there are over 5000  packages in the official repo (that's more than Arch Linux's official repos), and adding the <a href="http://cygwinports.org/" rel="nofollow">http://cygwinports.org/</a> repo gives you full KDE, GNOME 3 and Xfce on windows (although KDE has a first-party port).<p>What this tool offers over Cygwin is the ability to run <i>unmodified</i> linux binary-only software for which you do not have the source code. For me there's not very much of that although i release some at $DAYJOB.