Blear!

Very simple, Blur Wallpaper lets you blur, dim and remove colors from your current wallpaper to get a beautifully colored background that helps you focus on the important things.

Blurone lets you create wallpapers with a blur effect.

Tholotis is minimalistic app that enables you to blur, dim, and save your wallpapers.Done blurring and dimming? Let BackDrop™ take over, an algorithm that produces pixel perfect wallpaper optimization.