wm2

wm2 is a stacking window manager for X.

Fluxbox

Fluxbox is a window manager for X that was based on the Blackbox 0.61.1 code.

Also known as Joe’s Window Manager. Created in 2003, one of the default window manager for Puppy Linux, and actively updated by Joe, its creator.

KWin is a window manager for the X Window System, and is in the process of becoming a Wayland…

Productivity and Qt

herbstluftwm is a manual tiling window manager for X11 using Xlib and Glib.

pekwm is a window manager that once up on a time was based on the aewm++ window manager, but it has…

Qtile is a full-featured, hackable tiling window manager written in Python.

twm is a window manager for X11 built against Xlib.