brisync

Install command: 
brew install --cask brisync

Name: Brisync

Utility to automatically control the brightness of external displays

https://github.com/czarny/Brisync/

Cask JSON API: /api/cask/brisync.json

Cask code: brisync.rb on GitHub

Current version: 1.3.1

Current version requires: macOS >= 10.12

Analytics:

Installs (30 days)
brisync 8
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brisync 19
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brisync 73
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