Cairo Shell - Cairo is a desktop environment for Windows.
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Newgen - Newgen is an application that brings the new Metro UI to your desktop.
dwm - dwm is a dynamic window manager for X. It manages windows in tiled, monocle and floating layouts. All of the layouts can be applied dynamically, optimising the environment for the application in use and the task performed.
WinMetro - MacBooster 7, IObit official Mac app, helps you clean over 20 types of Mac junk files, easily free up Mac hard drive and make OS X run faster and secure your Mac OS X from Mac malware and Mac adware.
Openbox - Openbox is a highly configurable, next generation window manager with extensive standards support.