Build better networks, share ideas and make connections.
Developer Galaxy Technologies
GNS3 is a graphical network simulator that allows you to design complex network topologies. You may run simulations or configure devices ranging from simple workstations to powerful Cisco routers. It is based on Dynamips, Pemu/Qemu and Dynagen. GNS3 helps our growing community of users that represent some of the largest companies in the world, across all industries, design and build multi-vendor networks without the need for physical hardware infrastructure.
Build, Design and Test your network in a risk-free virtual environment and access the largest networking community to help. Whether you are studying for your first networking exam or building out a state-wide telecommunications network, GNS3 offers an easy way to design and build networks of any size without the need for hardware. And the best part is it’s free!
Real-time network simulation for pre-deployment testing without the need for network hardware
Run the OS that emulates real behavior of network hardware
Test 20+ different network vendors in risk-free virtual environment
Quickly run and test multiple hardware vendors without the need for hardware
Create dynamic network maps for troubleshooting and proof of concept (POC) testing
Test your networks before you build them to reduce the time it takes to get a production network up and running
Connect GNS3 to any real network
Leverage your existing hardware and expand your current lab by connecting your GNS3 topologies directly to it
Customized topologies and labs within GNS3 for network certification training
GNS3 is the best study tool for aspiring network professional seeking their certifications, without the need for a home lab.