i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
dwm - dwm is a dynamic window manager for X. It manages windows in tiled, monocle and floating layouts. All of the layouts can be applied dynamically, optimising the environment for the application in use and the task performed.
Fluxbox - Fluxbox is a window manager for X that was based on the Blackbox 0.61.1 code.
bspwm - A tiling window manager based on binary space partitioning
IceWM - icewm home page . Bug Tracking. If you have a patch, a bug report or a feature request to submit, please do so at the icewm project page at SourceForge.
Xmonad - xmonad is a dynamically tiling X11 window manager that is written and configured in Haskell.