1)   DeskSpace 1.5.1
DeskSpace helps you eliminate clutter, become more efficient, and get organized by expanding your desktop space into 3D.

 2)   CubeDesktop 1.2
CubeDesktop creates six virtual and independent desktops, increasing the space you have to work and play. Use our stunning 3D technology to quickly show, switch and move windows between desktops.

 3)   Parallels Desktop for Mac 3.0
Best virtualization solution for running Windows natively on your Mac! Use our new features: 3D Graphic Support, SnapShots, SmartSelect, Explorer and Security Manager to truly enjoy the best of both worlds - Get Parallels Desktop 3.0 for Mac!

 4)   Fk Desktop 3.017
Why do you have only one desktop, if you can have as many as you wish? If you have installed a lot of applications, surely your desktop is full with icons.With FK Desktop you can create as many desktops as you wish.

 5)   9Desks 1.5
9Desks is a program that permits you to have up to nine virtual desktops for better application management. This means that you can work in a more clean environment dividing active applications in more desktops.