Windows only: The Windows 7 taskbar is pretty convenient, but if you are running an older version of Windows (or are just looking for a cool mouse-based launcher), MouseExtender is a sleek program that launches with one click of the mouse.
By default, MouseExtender is triggered by clicking the middle mouse button (although if you have a nice multi-button mouse, you can configure it to any mouse button or keyboard combo you want). Invoking MouseExtender brings up a window you can add programs, files, folders or URLs to for easy access. You can do this either by dragging and dropping shortcuts into the window (though you need to “pin” the window by clicking the pin icon in the corner to do this) or by right-clicking on the gear icon and adding programs from your hard drive or from a list of currently running programs. You can also shut down or restart your computer from the launcher window. It’s small, lightweight, and simple.
MouseExtender is a free download, Windows only.