BetterDisplay
betterdisplay.proTake full control of your Mac's displays, from resolutions to brightness.
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MonitorControl
github.comControl your external display's brightness and volume from your Mac menubar.
Caffeine
caffeine-app.netA tiny menu bar app that keeps your Mac awake.
Free, open-source external monitor control for your Mac, right from the menu ba…
DisplayBuddy
displaybuddy.appControl all your Mac's monitors from one menu bar, with real hardware brightnes…
Yam Display
yamdisplay.comYet Another Monitor for your Mac, with iPad, iPhone, or another Mac.