ZoomIt is a desktop zoom and annotation tool, that enables you to zoom your desktop with your wheel mouse or the up and down arrow keys on your keyboard. It is activated with a customizable keyboard shortcut, and can also be used to draw on your desktop (with or without zoom), using a customizable color and pen width. ZoomIt is very convenient to use, it does not require any additional windows to open or close, and even includes a customizable break timer that will blank your screen with a countdown when it is activated.