GNS3 is described as 'Graphical network simulator that allows simulation of complex networks' and is a network simulator in the education & reference category. There are seven alternatives to GNS3 for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best GNS3 alternative is Cisco Packet Tracer, which is free. Other great apps like GNS3 are Eve-NG, Dynamips, Kathara and NetSim.
Packet Tracer is an essential learning tool used in these Cisco Networking Academy courses: IT Essentials, CCNA Routing and Switching, CCNA Security, Intro to Internet of Things (IoT), and Mobility Fundamentals.
The new EVE-NG platform is ready for todays requirements. It allows enterprises, e-learning providers/centres, individuals and group collaborators to create virtual proof of concepts, solutions and training environments.
NetSim for CCNP Network Simulator is now updated to support the new ROUTE, SWITCH and TSHOOT technologies. The improved interface of NetSim for CCNP makes completing labs, compiling new labs and designing network topologies easier than ever before.
3d Network Diagram and Design Tool Create network diagrams in real 3D. Access and monitor your devices from the diagrams. Easy creation of network diagrams with the network autodiscovery function.
Network Design Tool auto-generates the Rack Diagram, Wiring Log Book, 3D view, Bill of Materials and Specification with project costs. You don't have to manually do cost estimations any longer.
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It is a cable design layout rather then a network simulation tool