tripmode

Install command: 
brew install --cask tripmode

Name: TripMode

Control your data usage on slow or expensive networks

https://www.tripmode.ch/

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

Cask code: tripmode.rb on GitHub

Current version: 3.2.4,1385

Requirements: macOS >= 10.11

Versions:

Intel catalina 2.3.0,818
mojave 2.3.0,818
high sierra 2.3.0,818
sierra 2.3.0,818
el capitan 2.3.0,818

Analytics:

Installs (30 days)
tripmode 36
Installs (90 days)
tripmode 87
Installs (365 days)
tripmode 442