TopDesk is a tool that allows you to quickly switch between the windows of running programs on your Windows desktop by using thumbnail previews. The program offers such effects as Exposé, known from Mac OS X, which is based on the distribution of window previews throughout the desktop, or the Flip3D effect introduced in Windows Vista presented on the screen. TopDesk also allows you to manage your windows with the ability to close, minimize and recover thumbnails.

Another interesting option of the program is the show desktop function hiding all active windows outside the desktop. TopDesk in combination with DeskSpace is able to bring closer the functionality of such Linux applications as Compiz or Beryl.