Multiply Your PC's Desktops with VirtuaWin [Featured Windows Download]

Up to 9 virtual desktops with VirtualWin!

Note the icon being circles above in red...they are actually telling you each are different virtual desktops.

You will ask why the need for virtual desktops?

Virtual desktops provide a "virtual" space, in which the user can place their applications' windows. Each virtual desktop occupies a defined portion of the screen arranged in a matrix or grid. Application windows and icons can be moved between desktops, increasing a user's ability to organize their windowed applications that are currently running by reducing clutter.

More info on virtual desktops here.

VirtuaWin provides hotkeys for switching desktops, custom features per desktop, and a configurable number of desktops (up to 160 20). VirtuaWin is also open source and describes itself as small and fast "with no unnecessary features." If you want extra features, you can still have them by installing VirtuaWin Modules, which enhance the app much like Firefox extensions. (How we love pluggable open source software!) VirtuaWin is a free download for Windows only.

VirtuaWin - Virtual Desktops for Windows [via Worker's Edge]