brisync ☆
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Description:
Utility to automatically control the brightness of external displays
Type: Cask  |  Latest Version: 2.0.1@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: System utilities
Tags: brightness display automation utility monitor
Install: brew install --cask brisync
About:
Brisync is a macOS utility that automatically adjusts the brightness of external displays to match ambient light conditions detected by the built-in sensor. It solves the problem of manual brightness adjustments when switching between environments, providing a more comfortable viewing experience. The tool runs in the background and ensures seamless integration with the system's native brightness controls.
Key Features:
  • Automatic brightness synchronization with ambient light
  • Support for multiple external displays
  • System tray integration for easy control
  • Minimal resource footprint
Use Cases:
  • Maintaining consistent display brightness in varying lighting conditions
  • Reducing eye strain during extended work sessions
Alternatives:
  • Lunar – More feature-rich with advanced scheduling and DDC/CI support
  • Shifty – Focuses on blue light filtering with some brightness automation
Version History
Detected Version Rev Change Commit
Feb 25, 2026 1:02am 2.0.1 0 VERSION_BUMP 47495016
Aug 30, 2025 12:03pm 1.3.1 0 VERSION_BUMP 2473d2a3
Aug 5, 2025 2:16pm 1.3.1 0 VERSION_BUMP 0d6c31d2
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