WallShuffler 2.8

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WallShuffler 2.8 is a simple wallpaper changer that allows you to alternate between a selection of desktop backgrounds. The program can update your wallpaper every time you start Windows, or manually from the system tray. A feature that makes this (otherwise mediocre) application stand out, is the ability to apply various image effects to the wallpaper, without changing the original image.

from cbn.net