HiddenMe - Hide desktop icons with a single click.
Declutter - Cleans and organises your files in Mac desktop automatically
Pliim - One click and be ready to go up on stage and present!
PresenterMate - Unclutter your desktop, clear your mind.
Carpet - The easiest way to keep your desktop "clean" ;)
Steganography - Steganography instrument to be had free in its beta unencumber.