Preme for Windows - Speeds up your window switching.
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
GridMove - GridMove - A window management tool that can quickly arrange your windows into desktop grids.
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.
QuickTile - A lightweight utility for allowing you to quickly snap windows to a tiling grid under your existing...
awesome - A dynamic window manager for the X Window System developed in the C and Lua programming languages.