GNS3 is a graphical network simulator that provides virtual appliances for building network labs.
- Network topology design and simulation
- Integration with virtual appliances
- Supports remote compute servers
- Network lab simulations
- Training and certification prep
- Open-source and self-hosted
- Documentation: https://docs.gns3.com/
- Source Code: https://github.com/GNS3/gns3-server
GNS3 Setup