Cost / License
- Free
- Open Source (MIT)
Platforms
- Mac




Dimly is described as 'Open-source macOS menu bar tool offering brightness, blackout, and sleep control for external monitors, with DDC/CI hardware fallback and custom profiles' and is a Screen Dimmer in the system & hardware category. There are more than 10 alternatives to Dimly for Mac, Windows and Linux. The best Dimly alternative is MonitorControl, which is both free and Open Source. Other great apps like Dimly are Brightintosh, Lunar, DisplayBuddy and BetterDisplay.




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




DisplayBuddy lets you control external displays connected to your Mac right from your menu bar! No need to touch your clunky monitor buttons!




Unlock your displays on your Mac! Smooth scaling, HiDPI unlock, XDR/HDR extra brightness upscale, DDC, brightness and dimming, virtual screens, PIP and lots more!.


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.
Lumino is a Mac utility that automatically controls the brightness of connected external displays based on ambient light. It uses the built-in light sensor of supported Macs and works with DDC/CI when available, with fallback options for displays that don’t fully support...

This small utility will try to make controlling your external monitor brightness and contrast easier. Also it have day and night presets, which stored in a right-click on a button.

