Apps similar to DDCcontrol include Twinkle Tray, which is free and open source. Other options are MonitorControl, Monitorian, ddcutil and ddcui. You can choose from more than 10 Screen Dimmers like DDCcontrol for Mac, Windows and Linux.
The app lets you control the brightness of all your screens (both laptop and desktop) by a single click on a tray icon. Its look goes nicely with the system icons and it supports both light and dark mode.
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EU
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.
Simple Screen Brightness is a small portable application written in C# that allows you to adjust the brightness for all of your connected monitors using a slider without having to use their difficult-to-use built-in menu systems.
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.
LiteBright is a lightweight native brightness controller for Windows 10 and 11. It lets you control brightness across multiple monitors from the system tray, adjust displays independently or together, and use global keyboard shortcuts for quick changes.
Focus view, extra brightness, ambient glow, and keep awake — all from your menu bar. JoyScreen transforms how you use your Mac.
PolandEU
Free, open-source display control for Windows 11: one brightness slider for every monitor (DDC/CI and laptop panels), night light, focus mode, keep awake, per-monitor taskbar hiding and glass, OLED care, your monitor's own settings, hotkeys and a CLI.
India
Python monitor control using the VESA Monitor Control Command Set (MCCS) over the Display Data Channel Command Interface Standard (DDC-CI).
