ZoomIt is a desktop zoom tool that enables you to zoom your desktop with your mouse wheel or the up and down arrow keys on your keyboard. It is activated with a customizable keyboard shortcut and is very convenient to use. Best of all, it is FREE!
I like the way ZoomIt allows you to easily toggle between zoom in and zoom out. Many zoom products lock you into a zoomed view or a non zoomed view. Once you turn zoom it on you may use the ctrl+1 (or any shortcut you designate) to turn ZoomIt on or off. Once on, the mouse wheel or the arrow keys adjusts the amount of zoom.