GNS3
gns3.comNetwork simulation software for building and testing virtual networks
Dev Toolsnetwork-simulationnetworkingciscovirtual-labseducationopen-sourceinfrastructure

About
GNS3 is a network simulation platform that allows engineers and students to design, build, and test virtual network topologies using real network software. It supports a wide range of devices including routers, switches, and firewalls from vendors like Cisco, Juniper, and more. Users can run complex network labs without needing physical hardware.
Problem
Setting up physical network labs for testing and learning is expensive and impractical.
For
network engineers, IT students, and certification candidates
How it works
GNS3 emulates real network hardware and software in a virtualized environment, allowing users to drag and drop devices into topologies and configure them using actual vendor operating systems.
Business model
open-source
Status
launched
Company
GNS3 Technologies Inc.