1)   Cool Desk 3.87
Cool Desk is a virtual desktop manager. Ever wish to have several screens on your computer? Cool Desk creates up to 9 virtual desktops and allows you to have different windows in each of them.

 2)   AltDesk 1.8
Virtual Desktops Manager: it enables you to work on various tasks simultaneously without opening and closing application windows each time. AltDesk keeps your Desktop clean and saves your time. The program's look can be changed by applying skins.