lunar

Install command: 
brew install --cask lunar

Name: Lunar

Adaptive brightness for external displays

https://lunar.fyi/

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

Cask code: lunar.rb on GitHub

Current version: 6.9.5

Requirements: macOS >= 11

Analytics:

Installs (30 days)
lunar 949
Installs (90 days)
lunar 2,759
Installs (365 days)
lunar 10,686