Published on august 21, 2008. Allows to organise your apps on up to 4 virtual desktops.
Check it out here: http://technet.microsoft.com/en-gb/sysinternals/cc817881.aspx.
No installation necessary. Just click on Download Desktops, unzip the Zip file, and run the Exe file (or immediately download the Exe file if you download it from http://live.Sysinternals.com/desktop.exe). Great like most Sysinternals apps !