awesomewm
Highly configurable, next generation framework window manager for X. It is very fast, extensible and licensed under the GNU GPLv2 license. Configured in Lua, it has a system tray, information bar, and launcher built in. There are extensions available to it written in Lua. Awesome uses XCB as opposed to Xlib, which may result in a speed increase. Awesome has other features as well, such as an early replacement for notification-daemon, a right-click menu similar to that of the *box window managers, and many other things.

worm
Worm is a is a dynamic, tag-based window manager for X11. It supports both a floating layout and a master-stack tiling layout and is developed openly. It is also written in the Nim programming language.

bspwm
A tiling window manager that represents windows as the leaves of a full binary tree. It has support for EWMH and multiple monitors, and is configured and controlled through messages.

ratpoison
Simple Window Manager with no fat library dependencies, no fancy graphics, no window decorations, and no rodent dependence. It is largely modeled after GNU Screen which has done wonders in the virtual terminal market. Ratpoison is configured with a simple text file. The information bar in Ratpoison is somewhat different, as it shows only when needed. It serves as both an application launcher as well as a notification bar. Ratpoison does not include a system tray.

https://wiki.archlinux.org/title/window_manager

Stumpwm
Tiling, keyboard driven X11 Window Manager written entirely in Common Lisp. Stumpwm attempts to be customizable yet visually minimal. It does have various hooks to attach your personal customizations, and variables to tweak, and can be reconfigured and reloaded while running. There are no window decorations, no icons and no buttons. Its information bar can be set to show constantly or only when needed.

echinus
Simple and lightweight tiling and floating window manager for X11. Started as a dwm fork with easier configuration, echinus became full-featured re-parenting window manager with EWMH support. It has an EWMH-compatible panel/taskbar, called ourico.

spectrwm
Small dynamic tiling window manager for X11, largely inspired by xmonad and dwm. It tries to stay out of the way so that valuable screen real estate can be used for much more important stuff. It has sane defaults and is configured with a text file. It was written by hackers for hackers and it strives to be small, compact and fast. It has a built-in status bar fed from a user-defined script.

Qtile
Full-featured, hackable tiling window manager written in Python. Qtile is simple, small, and extensible. It is easy to write your own layouts, widgets, and built-in commands.It is written and configured entirely in Python, which means you can leverage the full power and flexibility of the language to make it fit your needs.

Wingo
Fully featured true hybrid window manager that supports per-monitor workspaces, and neither the floating or tiling modes are after thoughts. This allows one to have tiling on one workspace while floating on the other. Wingo can be scripted with its own command language, is completely themeable, and supports user defined hooks. Wingo is written in Go and has no runtime dependencies.

xmonad
Dynamically tiling X11 window manager that is written and configured in Haskell. In a normal WM, you spend half your time aligning and searching for windows. Xmonad makes work easier, by automating this. XMonad is configured in Haskell. For all configuration changes, xmonad must be recompiled, so the Haskell compiler (over 100MB) must be installed. A large library called xmonad-contrib provides many additional features.

dwm-flexipatch
A dwm build that uses preprocessor directives to decide whether or not to include a patch during build time.

dusk
An comprehensive and polished build of dwm that features workspaces and seamless restarts

twin
Twin is a windowing environment with mouse support, window manager, terminal emulator and networked clients, all inside a text display.

Ion3
An abandoned tiling tabbed window manager designed for keyboard users.

pdwm
dwm fork with a control center (pdwmc), full animation support, and easy configuration

Notion
Tiling, tabbed window manager for the X window system that utilizes 'tiles' and 'tabbed' windows.

• Tiling: you divide the screen into non-overlapping 'tiles'. Every window occupies one tile, and is maximized to it
• Tabbing: a tile may contain multiple windows - they will be 'tabbed'.
• Static: most tiled window managers are 'dynamic', meaning they automatically resize and move around tiles as windows appear and disappear. Notion, by contrast, does not automatically change the tiling.
  
  

Notion is a fork of Ion3.

marswm
A modern window manager featuring dynamic tiling (rusty successor to moonwm).

Hypr
Hypr is a dynamic Linux tiling window manager for Xorg. It's written in XCB with modern C++ and aims to provide easily readable and expandable code.

Vivarium
A dynamic tiling Wayland compositor using wlroots, with desktop semantics inspired by xmonad.

dwl
dwl is a compact, hackable compositor for Wayland based on wlroots. It is intended to fill the same space in the Wayland world that dwm does in X11, primarily in terms of philosophy, and secondarily in terms of functionality.

Newm
Wayland compositor written with laptops and touchpads in mind

River
Dynamic tiling compositor, inspired by DWM and BSpWM

Hyprland
Hyprland is a dynamic tiling Wayland compositor based on wlroots that doesn't sacrifice on its looks.

Sway
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.

https://wiki.archlinux.org/title/Comparison_of_tiling_window_managers

swvkc
Vulkan Wayland compositor. It can output to a single GPU and a monitor, use a single keyboard and a mouse.

Qtile
Tiling window manager written and configured in Python based on wlroots

Cage
Kiosk based compositor for displaying a single fullscreen application (in GURU)

Lipstick
Framework for building homescreen applications for mobile devices based on Qt and QML

Gamescope
SteamOS session compositing window manager

wmii
wmii is a dynamic window manager for X11. It supports classic and tiled window management with extended keyboard, mouse, and 9P-based[1] remote control. It consists of the wmii(1) window manager and the wmiir(1) the remote access utility.

scrotwm
scrotwm is a minimalistic window manager that tries to stay out of the way so that valuable screen real estate can be used for much more important stuff. It has sane defaults and does not require one to learn a language to do any configuration. It was written by hackers for hackers and it strives to be small, compact and fast.

snapwm
snapwm is a xinerama and Xrandr aware, minimal and lightweight dynamic tiling window manager.

catwm
catwm is a very simple and lightweight tiling window manager aiming to stay under 1000 SLOC.

FrankenWM
FrankenWM is a dynamic tiling window manager, comparable to dwm or awesome. This means there are a number of predefined layouts that are used to tile the windows. The source code is based on monsterwm-xcb, but includes a lot of bugfixes and additonal features like extensive runtime configuration, a scratchpad window, window minimizing, floating control via keyboard and currently 13 different tiling layouts.

strata
Wayland compositor written in Rust using the Smithay library.

xswm
Minimal window manager where every window is maximized / fullscreen.