Post Description

SwitchResX gives you unparalleled control over your monitor's resolution.

Resolution Management

Whether you prefer to use the menu bar or nested contextual menus, SwitchResX gives you constant, simplified access to the resolution management options you need.

Controls include:

Monitor Resolution
Color Depth
Video Mirroring
Display Rotation
Display Overscan

Bountiful Features

Save your desktop layout, locking and maintaining icon and window positions for all of your open applications every time you start up your Mac. SwitchResX lets you instantly restore your desktop even after resolution-altering events like connecting or disconnecting your external monitor.
Disable or deactivate a monitor without physically unplugging it, allowing you to use your MacBook in clamshell mode with an external monitor, keyboard and mouse
Link your monitor settings with system events: Key shortcuts, Apple Scripts, Application launches and more.
Take complete control over your display resolution: Advanced features let you create and enable new resolutions for your monitor, HDTV, Plasma or LCD screen or Video Projector.

What's New
Version 4.3.2:

Allows to set displays in gray levels from Display Sets
Allows to select resolution from preferences even if the Daemon is not running
Allows to modify menu settings for all resolutions in the preferences by pressing the alt key
Uses Mountain Lion Notification Center for notifying new version availability
Corrects a bug on Mountain Lion that could cause some other applications to behave strangely (VMWare Fusion, Preview, TextEdit...)
Corrects a bug with the TimeMachine interface on Mountain Lion
Corrects a bug in the Preferences application where quitting wouldn't ask to save settings
Corrects a bug that would cause SwitchResX to remember several dozens of resolutions on inactive displays, which could cause a growing preferences file, memory leaks and some delay by Fast User switching

Requirements
PPC / Intel, Mac OS X 10.5 or later