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4Screens Pro

Вот такое на нее описание:

4Screens helps you manage and run many more applications simultaneously by creating four separate Windows Screens, each with it's own Windows taskbar that you can use in your familiar manner. You can quickly switch between each screen and work on one group of programs whilst at the same time your other programs continue to run in the remaining screens. No extra hardware required, no special alterations to your system or monitor. Features include: Sticky Windows, Multiple Wallpapers, Go Direct To Application, Password Protection & Personal Configuration support.