Ever wanted to try a different operating system without having to go through too much hassle or do you want Ubuntu everywhere regardless of which PC you are using? Then you might be interested in Portable Ubuntu for Windows, as the name says, this is a portable version of Ubuntu that runs within Windows.
Portable Ubuntu for Windows is a Ubuntu system running as a Windows application.
This system is built with the Colinux Kernel, Xming X server and Pulseaudio server for Windows.
Portable Ubuntu for Windows is a useful tool when you need to move yourself to other machine that have Windows as operating system.