DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
EasyRes - EasyRes is a fast screen resolution switcher for Mac OS X with live animated previews.
Dual Monitor Tools - Download Dual Monitor Tools for free. Tools for Windows users with dual or multiple monitors. Tools for Windows users with dual or .
SwitchResX - SwitchResX is a tool designed to manage resolutions of all your monitors and HDTVs.
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.
QuickRes - The best way to change resolutions on your Mac