Always on Top - Keep Any Window Visible Always.
DeskPins - DeskPins can be used to make any application topmost, that is, to keep it above all other windows.
TurboTop - Keeps your windows "Always on Top"
PowerMenu - PowerMenu is a small application that some extra menu items to the windows control menu in addition...
SmartSystemMenu - SmartSystemMenu extends system menu of all windows in the system
WindowTop - Easly set any window on top, just move the mouse to the top area of the window.