'Free Os Zoo Project', and 'Go'

Free Os Zoo Project

Run several Operating Systems on a single computer. FreeOSZoo provides ready-to-run images of virtual computers, pre-installed with a Free Operating System and a set of popular free software. To get started, you only need to install QEMU and download a single file from the FreeOSZoo project.

http://free.oszoo.org/index-2.html

Go

Another build of the best minimalist shell we've found for Windows. GO is super light shell for use with, as near as I can tell, all WINDOWS versions by Microsoft. It features 38 hotkeys that activate shortcuts in its homefolder and a history that is accessible with Cursor Up/Down. It can also be skinned in a variaty of ways (See the Skin Options for more info). Its overall design is meant to be minimal to provide access to your documents, files and programs with as little fuss as possible. The command line box can be use to type such things as "calc" or "www.shellcity.net" and the browse button can be used to find and run your other files. GO takes up very little screen space (600x20) and can be rolled up to a tiny cube (20x20). In short GO is a very easy and flexible shell replacement that can either be as complex or as simple as you wish.

http://www.shellcity.net/go/go.htm