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ControlMyMonitor vs Twinkle Tray: catalog facts
ControlMyMonitor	Twinkle Tray
Best for: Adjusting or scripting external monitor settings from Windows	Best for: Changing the brightness of external monitors without reaching for their physical buttons
Free Freeware from NirSoft that may be redistributed free of charge.	Free Free and open source under the MIT licence. Also available from the Microsoft Store.
Windows, Command line	Windows
Changes brightness, contrast and input source without the monitor's buttons Full command-line control for scripts All 4 strengths for ControlMyMonitor Changes brightness, contrast and input source without the monitor's buttons Full command-line control for scripts Saves and restores monitor configurations Portable, with no installation needed	Brightness sliders for external monitors, which Windows does not provide Automatic brightness by time of day or when idle All 4 strengths for Twinkle Tray Brightness sliders for external monitors, which Windows does not provide Automatic brightness by time of day or when idle Hotkeys for specific or all displays, and backlight normalisation across monitors Matches the taskbar appearance using your Personalization settings
Requires hardware that supports DDC/CI Results depend on monitor firmware, cable and graphics driver All 3 limitations for ControlMyMonitor Requires hardware that supports DDC/CI Results depend on monitor firmware, cable and graphics driver A January 2026 notice reports an AMD driver bug that breaks DDC/CI	Requires monitors that support DDC/CI, and not all do or have it enabled Windows only All 4 limitations for Twinkle Tray Requires monitors that support DDC/CI, and not all do or have it enabled Windows only Some monitors respond slowly or unreliably to DDC/CI commands The last release is from December 2025
Downloadable app	Downloadable app
Not open source	Open source
License: Freeware	License: MIT
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for ControlMyMonitor nirsoft.net/utils/control_my_monitor.html Catalog checked October 8, 2026	Official website Full listing and sources Sources for Twinkle Tray github.com/xanderfrangos/twinkle-tray Catalog checked September 21, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.