Today’s featured promo on MacUpdate offers SwitchResX for US$9.99 (46% off, retail $18.37). “SwitchRes is a little utility built around a menu extra that will allow you to switch the resolution of all your monitors. SwitchRes already incorporates features from the Monitor Resolution, Monitor BitDepth, and Video Mirroring Control Strip Modules bundled with your system.” SwitchResX requires Mac OS X 10.3 or later.