From Johan Piculell:
Using a virtual desktop manager you will be able to organize applications over several "virtual" desktops. Portable VirtuaWin application was designed to be a simple, easy use yet still highly configurable and extensible virtual desktop manager. Virtual desktops are very common in the Unix community and once getting used to this, it is very hard to manage without it.
What's new in this version:
Version 4.4 fixes activation of minimized window when not hiding them.