Twinkle Tray enables brightness control on external displays in Windows 10 & 11. Even th Windows is capable of adjusting the backlight on most monitors, it doesn't support external monitors natively.

Solar Screen Brightness is described as 'Changes monitor brightness based on sunrise/sunset times' and is an app. There are six alternatives to Solar Screen Brightness for Mac and Windows. The best Solar Screen Brightness alternative is Twinkle Tray, which is both free and Open Source. Other great apps like Solar Screen Brightness are Brightintosh, winddcutil, Lunar and BrightXDR.
Twinkle Tray enables brightness control on external displays in Windows 10 & 11. Even th Windows is capable of adjusting the backlight on most monitors, it doesn't support external monitors natively.

BrightIntosh is lightweight, works system-wide, has optional launch-at-login functionality and includes a global hotkey to toggle the extra brightness.



Windows implementation of the ddcutil Linux program for querying and changing monitor settings, such as brightness and color levels.

The program is designed to adjust the brightness of monitors, laptop displays and other equipment. Runs on Windows 7+ and does not require installation. Works with all external monitors that have DDC/CI support, as well as with built-in displays of laptops, all-in-ones and...

