DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
Preme for Windows - Speeds up your window switching.
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.
GridMove - GridMove - A window management tool that can quickly arrange your windows into desktop grids.
Mizage Divvy - Divvy is an entirely new way of managing your workspace.
WinDock - WinDock is a window manager ideal for large, or multi-monitor setups. Features: