Apps similar to DisplayBuddy include Twinkle Tray, which is free and open source. Other options are Crisp - Monitor Control, Dimly, MonitorControl and Monitorian. You're spoiled for choice with Screen Dimmers like DisplayBuddy: we list more than 25 alternatives for Mac, Windows and Linux.
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.
United States
Open-source macOS menu bar app enabling HiDPI scaling on external monitors, DDC brightness with software dimming, icon-based display presets, virtual displays, drag-to-arrange multi-monitor layouts, ICC profile switching, auto-brightness sync, and quick access toggles for display modes.
Norway
Open-source macOS menu utility for unified brightness, blackout, and sleep control of external monitors, using hybrid DDC/CI and software overlays, per-display settings, custom profiles, hotkeys, panic shortcut, privacy by design, and secure signed builds.
Ireland
EU
Monitorian is a Windows desktop tool to adjust the brightness of multiple monitors with ease.
Japan
Most monitors, other than laptop displays, have a Virtual Control Panel (VCP), which implements features defined in the Montor Control Command Set (MCCS). Typically, ddcutil communicates with the monitor's VCP over an I2C bus, as per the Display Data Channel/Command...
XDR brightness boost app for Mac — push your display to 1600 nits using native EDR overlay, with color accuracy preserved and better battery efficiency.
Windows implementation of the ddcutil Linux program for querying and changing monitor settings, such as brightness and color levels.
BrightIntosh is lightweight, works system-wide, has optional launch-at-login functionality and includes a global hotkey to toggle the extra brightness.
RomaniaEU
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!.
FinlandEU
DisplaySpan is a native macOS menu bar app for multi-monitor setups. It lets the pointer cross blocked display edges, saves and restores display arrangements, and adjusts brightness on supported displays.
