There are 4 repositories under external-monitor topic.
🖥 Control your display's brightness & volume on your Mac as if it was a native Apple Display. Use Apple Keyboard keys or custom shortcuts. Shows the native macOS OSDs.
:computer::arrow_right: Extend a HIDPI screen to a normal DPI external display
Control your display's brightness from the macOS menu bar. Simple and easy to use.
Control your external monitor brightness & volume on your Mac
Control your external monitor brightness on your Linux
Background changer that changes background depending on resolution