Vista and XP Virtual Desktops is described as 'One of Vistas most talked-about new features is the Desktop Window Manager (DWM). A new set of thumbnail APIs can be used to access thumbnails of open windows. This virtual desktop program takes advantage of this new API and uses some tricks of its own to provide a powerful' and is a virtual desktop manager in the system & hardware category. There are more than 10 alternatives to Vista and XP Virtual Desktops for Windows, Linux, PortableApps.com and GNOME. The best Vista and XP Virtual Desktops alternative is VirtuaWin, which is both free and Open Source. Other great apps like Vista and XP Virtual Desktops are App Fleet, Sysinternals Desktops, WindowsPager and 9Desks.