DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
HRC – Hotkey Resolution Changer - If you are looking for a sumptuous desktop application that will overcome every bit of your need to adjust the brightness, resolution, and color contrast of your screen, then Hotkey Resolution Changer can be a smart option for you.
Ultramon - UltraMon is a piece of software built to help with the management of multiple screens on the same computer system. Without software like this, taking full advantage of an expanded desktop space can be difficult.
Display Resolution Manager - Display Resolution Manager is an easy-to-use software that is providing a straightforward way to play around with your screen resolution and color settings.
Actual Multiple Monitors - Actual Multiple Monitors is a software utility which offers the comprehensive solution to improve the functionality of Windows user interface for comfortable and effective work with multi-monitor configurations.
SwitchResX - SwitchResX is a tool designed to manage resolutions of all your monitors and HDTVs.