Sway is a tiling Wayland compositor and a drop-in replacement for the i3 window manager for X11. It works with your existing i3 configuration and supports most of i3's features, plus a few extras.
Sway allows you to arrange your application windows logically, rather than spatially. Windows are arranged into a grid by default which maximizes the efficiency of your screen and can be quickly manipulated using only the keyboard.
Sway is documented via manpages. For a list of available manpages, refer to man -k sway.
We also maintain the wlroots project to provide a modular basis for Sway and other Wayland compositors to build upon, and we publish standards for interoperable Wayland desktops.
i3's interprocess communication (or ipc) is the interface i3wm uses to receive commands from client applications such as i3-msg. It also features a publish/subscribe mechanism for notifying interested parties of window manager events.
i3ipc-python is a Python library for controlling the window manager. This project is intended to be useful for general scripting, and for applications that interact with the window manager like status line generators, notification daemons, and window pagers.
If you have an idea for a script to extend i3wm, you can add your script to the examples folder.
For details on how to use the library, see the reference documentation.
j4-dmenu-desktop is a replacement for i3-dmenu-desktop. It's purpose is to find .desktop files and offer you a menu to start an application using dmenu. Since r2.7 j4-dmenu-desktop doesn't require i3wm anymore and should work just fine on about any desktop environment.
You can also execute shell commands using it.
i3 is a dynamic tiling window manager with clean, readable and documented code, featuring extended Xinerama support, usage of libxcb instead of xlib and several improvements over wmii