i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Effortless - Stay focused and beat procrastination on your Mac.
awesome - A dynamic window manager for the X Window System developed in the C and Lua programming languages.
Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar
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.
Forest App - Forest is an app that helps you stay focused on the important things in life.