cyberduck

Install command: 
brew install --cask cyberduck

Name: Cyberduck

Server and cloud storage browser

https://cyberduck.io/

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

Cask code: cyberduck.rb on GitHub

Current version: 9.2.1,43578

Requirements: macOS >= 10.13

Analytics:

Installs (30 days)
cyberduck 2,407
Installs (90 days)
cyberduck 6,889
Installs (365 days)
cyberduck 26,228