LG OnScreen Control is described as 'Allows to set the brightness (and other settings) of the monitor through DDC/CI. Meaning: keyboard and/mouse instead of having to fiddle with the OSD menu manually. http://www.lg.com/us/support/monitors'. There are seven alternatives to LG OnScreen Control for Windows, Mac and Linux. The best alternative is Gammy, which is both free and Open Source. Other great apps like LG OnScreen Control are Dimmer (Free), CareUEyes (Paid), Brisync (Free, Open Source) and ControlMyMonitor (Free).
CareUEyes is a very simple but useful program when it is about your eye care. The program comes with a very simple and clean interface and needs to technical knowledge. Even a novice computer user can download and use it easily.
Synchronize your external monitor brightness with built-in display. Application reads current brightness of your built-in display and passes it to external monitors via DDC interface. You can adjust brightness by menu in system status bar.
ControlMyMonitor allows you view and modify the settings of your monitor (Also known as 'VCP Features'), like brightness, contrast, sharpness, red/green/blue color balance, OSD Language, Input Port (VGA , DVI , HDMI ) and more...
Ever had a headache, dry or red eyes, fatigue or neck pain at the end of the day? This app is for you then! It's all the symptoms of computer vision syndrome (or CVS). About 90% of computer workers have it.