 In contrast to "compositing" window managers (see below), the lack of separate off-screen buffers can mean increased efficiency, but effects such as translucency are not possible.Stacking window managers include Amiwm, Blackbox, Enlightenment, Fluxbox, FVWM, IceWM, MWM, Openbox and Window Maker.A tiling window manager is a window manager with an organization of the screen into mutually non-overlapping frames (hence the name tiling), as opposed to the traditional approach of coordinate-based stacking of objects (windows) that tries to emulate the desk paradigm.