GridMove - GridMove - A window management tool that can quickly arrange your windows into desktop grids.
Glass2k - Small little program that allows Windows 2000/XP users to make any window transparent.
Preme for Windows - Speeds up your window switching.
WindowTop - Easly set any window on top, just move the mouse to the top area of the window.
QuickTile - A lightweight utility for allowing you to quickly snap windows to a tiling grid under your existing...
DeskPins - DeskPins can be used to make any application topmost, that is, to keep it above all other windows.