xquartz

Install command: 
brew install --cask xquartz

Name: XQuartz

Open-source version of the X.Org X Window System

https://www.xquartz.org/

/api/cask/xquartz.json (JSON API)

Cask code on GitHub

Current version: 2.8.5

Analytics:

Installs (30 days)
xquartz 7,847
Installs (90 days)
xquartz 24,483
Installs (365 days)
xquartz 88,363
Fork me on GitHub