penrose
A library for writing an X11 tiling window manager
...This means that, unlike most other tiling window managers, Penrose is not a binary that you install on your system. Instead, you use it like a normal dependency in your own crate for writing your own window manager. Don't worry, the top-level API is well documented and a lot of things will work out of the box, and if you fancy digging deeper you'll find lots of opportunities to customize things to your liking. Penrose was born out of my failed attempts to refactor the dwm codebase into something that I could more easily understand and hack on. While I very much admire and aim for minimalism in code, I personally feel that it becomes a problem when your code base starts playing code golf to keep things short for the sake of it.