Oristand - A super affordable, portable standing desk
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
SmartDesk - The most affordable premium standing desk
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.
Cowboy - Small, fast, modular HTTP server written in Erlang.
Openbox - Openbox is a highly configurable, next generation window manager with extensive standards support.