hummingbird

Install command: 
brew install --cask hummingbird

Name: Hummingbird

OpenVPN 3 client

https://airvpn.org/hummingbird

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

Cask code: hummingbird.rb on GitHub

Current version: 2.0.0

Requirements: macOS >= 10.15

Versions:

Intel tahoe 2.0.0
sequoia 2.0.0
sonoma 2.0.0
ventura 2.0.0
monterey 2.0.0
big sur 2.0.0
catalina 2.0.0

Analytics:

Installs (30 days)
hummingbird 6
Installs (90 days)
hummingbird 24
Installs (365 days)
hummingbird 96