Circle Dock is a free open source dock-style applications launchers for Windows that appear where your mouse is instead of you having to move your mouse to the dock like with other programs. This is accomplished by making the dock a circular or spiral shape so that it can be placed anywhere, even near the edge of the screen. The offscreen portions of the dock are easily reached by just scrolling with your mouse wheel or arrow keys.
A user defined hotkey combination is used to make the dock appear and disappear. By default, this combination is CTRL-WINDOWS KEY. You can change it in the settings area of the program.