Vista/XP Virtual Desktop Manager

Vista provides developers with the new DWM based aero interface. A new set of thumbnail API’s can be used to access some of this new technology. On codeplex we can find a virtual desktop program takes advantage of this new API and uses some tricks of its own to provide a powerful virtual desktop manager with a full screen thumbnail based preview. You can have as many desktops as you want and can seamlessly switch between them.
IMPORTANT: Vista/XP Virtual Desktops provides support for XP as well, although window previews are not live since XP doesn’t have DWM.
Here some cool features:

Full screen desktop/window manager/preview with full drag and drop managing

Desktop switch indicator

An infinite number of desktops

Watch the windows move in real time as you drag them around in the window manager

Multiple monitor support

Window menus

Tray icons for each desktop

Per-desktop backgrounds

Configurable colors, fade speeds, hotkeys, etc.

Uses Vista’s live thumbnails

XP support

And much more!

Here the codeplex project!