Divuni - Daily questions - A social mindfulness platform
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
MindU.io - Meditate to calm your mind and shape your life for health and happiness!
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.
Portal.app - Experience beautiful and immersive ambience from around the world, designed to improve focus, sleep & relaxation. Now with support for Philips Hue.
Openbox - Openbox is a highly configurable, next generation window manager with extensive standards support.