Focus on a window and blank everything else, with CinemaDrape
CinemaDrape is a free, small and (optionally) portable application you can use to focus on your current task on the screen (such as watching a video on a web page, or a photo or reading a document).
CinemaDrape will blank or dim the other less important areas of the screen, until you press the Escape button.
Features: easy to use, just move your mouse over the area you want to focus on and press the CinemaDrape keyboard shortcut you have defined. * To focus on an entire window (such as your current, active window), just move your mouse over the title bar at the top of the window and press the CinemaDrape shortcut;
Easily move or resize the focus area using the mouse or arrow keys. * Change the color or opacity of the drape that covers the less important screen areas. * Save your favorite focus areas for future use. * Multi-monitor support