Ubuntu - Ubuntu is a Debian Linux-based open source operating system for desktop computers.
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Linux Mint - Linux Mint is one of the most popular desktop Linux distributions and used by millions of people.
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.
Lubuntu - Lubuntu is a fast and lightweight operating system with a clean and easy-to-use user interface. The core of the system is based on Linux and Ubuntu. Lubuntu uses the minimal desktop LXDE, and a selection of light applications.
Openbox - Openbox is a highly configurable, next generation window manager with extensive standards support.