pritunl

Install command: 
brew install --cask pritunl

Name: Pritunl

OpenVPN client

https://client.pritunl.com/

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

Cask code: pritunl.rb on GitHub

Current version: 1.3.4375.96

Requirements: macOS >= 10.11

Analytics:

Installs (30 days)
pritunl 261
Installs (90 days)
pritunl 750
Installs (365 days)
pritunl 3,245