In the past I used to use a tool called Dexpot. It had the same functionalities that Desktops has and, in the latest version, you could create up to 20 different desktops! Ok... that is quite unnapropriate but its quite interesting. AND you can move windows through different desktops. Yeah! But I have to admit that Desktops is lightning fast! Usually, as you open a large number of applications, using other tools, it coul drop your PC performance to the bottom of the hill, but Desktops can work around that quite well.