ivpn

Install command: 
brew install --cask ivpn

Name: IVPN

VPN client

https://www.ivpn.net/en/apps-macos

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

Cask code: ivpn.rb on GitHub

Current version: 3.14.34

Requirements: macOS >= 10.15

Versions:

Intel tahoe 3.14.34
sequoia 3.14.34
sonoma 3.14.34
ventura 3.14.34
monterey 3.14.34
big sur 3.14.34
catalina 3.14.34

Analytics:

Installs (30 days)
ivpn 15
Installs (90 days)
ivpn 58
Installs (365 days)
ivpn 254