ddcctl
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Description:
DDC monitor controls (brightness) for Mac OSX command-line
Type: Formula  |  Latest Version: 1@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: System utilities
Tags: monitor ddc-ci brightness macos cli hardware
Install: brew install ddcctl
About:
ddcctl is a command-line utility for macOS that interacts with monitors via the DDC/CI protocol to adjust hardware settings. It allows users to directly control display parameters like brightness, contrast, and input source without using the monitor's physical buttons. This tool is particularly useful for users with external monitors that lack native macOS brightness control support.
Key Features:
  • Command-line interface for direct monitor control
  • Adjust brightness, contrast, and volume via DDC/CI
  • Supports multiple monitors with target selection
  • No GUI overhead - lightweight and scriptable
Use Cases:
  • Controlling brightness on external monitors from macOS terminal
  • Automating monitor settings adjustments via shell scripts
  • Managing multiple displays in a workstation setup
Alternatives:
  • MonitorControl – Provides GUI-based brightness control with menu bar integration
  • brightnessctl – Linux-focused tool, not compatible with macOS DDC/CI
License: GPL-3.0-only
Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, arm64_big_sur, sonoma, ventura, monterey, big_sur, catalina
Version History
Detected Version Rev Change Commit
Sep 15, 2025 5:25am 0 VERSION_BUMP c24eebc3