[Update July 2010: Bumptop has been acquired by Google.com. The free software is no longer available. However, if you have purchased the PRO version, you will receive “End of Life Support”. All links on this has been updated to Google or Wiki pages. ]
BumpTop is a free software that can transform your desktop into a 3D Desktop. Apart from giving the feeling of more space, it this free 3D Desktop tool also helps you organize your desktop.
In addition to helping you organize your work on your 3D Desktop, BumpTop could also respond to physical effects if you have a touch screen or a tablet computer.
Though it works with the mouse too, BumpTop’s physical effects are even more captivating as icons move under your finger like they would in the real world. You can flick through piles, toss icons at widgets to get stuff done, use fluid gestures to advance photo slideshows or manipulate stuff.