CLFSWM is described as 'highly dynamic. 100% Common Lisp X11 window manager. By default there is only one frame (the root frame). Other frames are created/deleted on the fly. A window can be in more than one frame, so it can have multiple views of the same windows' and is an app in the Development category. There are more than 10 alternatives to CLFSWM for Linux, BSD and Mac. The best alternative is awesome, which is both free and Open Source. Other great apps like CLFSWM are Xmonad (Free, Open Source), KWin (Free, Open Source), qtile (Free, Open Source) and Sawfish (Free, Open Source).
xmonad is a 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.
KWin is a window manager for the X Window System, and is in the process of becoming a Wayland compositor. It is an integral part, and the default window manager of the Plasma Workspaces, but it can also be used on its own or with other desktop environments.
Sawfish is an extensible window manager using a Lisp-based scripting language. Its policy is very minimal compared to most window managers. Its aim is simply to manage windows in the most flexible and attractive manner possible.
StumpWM is a tiling, keyboard driven X11 Window Manager written and scriptable in Common Lisp. StumpWM attempts to be customizable yet visually minimal. There are no window decorations, no icons, and no buttons.
A dynamic tiling Wayland compositor using wlroots, with desktop semantics inspired by xmonad. Core features include: - Automatic/dynamic tiling with your choice of layouts. - Per-output workspaces: display the workspace you want, where you want.
subtle is a manual tiling window manager with a rather uncommon approach of tiling: Instead of relying on predefined layouts, subtle divides the screen into a grid with customizeable slots (called gravities).