AeroSpace is an i3-like tiling window manager for macOS
Global
GlazeWM is a tiling window manager for macOS and Windows inspired by i3wm.
Polybar aims to help users build beautiful and highly customizable status bars for their desktop environment, without the need of having a black belt in shell scripting.
Elkowars Wacky Widgets is a standalone widget system made in Rust that allows you to implement your own, custom widgets in any window manager.
Rift is a tiling window manager for macOS that focuses on performance and usability.
Rofi: A window switcher, application launcher and dmenu replacement
A tiling window manager for X11