Magic - Get whatever you want on demand with no hassle, through SMS
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Operator - Looking for something? Make a request and we'll find it.
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.
M - A personal assistant built inside Facebook Messenger
Openbox - Openbox is a highly configurable, next generation window manager with extensive standards support.