gns3

Install command: 
brew install --cask gns3

Names: GNS3, Graphical Network Simulator 3

GUI for the Dynamips Cisco router emulator

https://www.gns3.com/

Development: Pull requests

Cask JSON API: /api/cask/gns3.json

Cask code: gns3.rb on GitHub

Current version: 3.0.6

Requirements: macOS >= 12

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