GNS3 is a graphical network simulator that allows simulation of complex networks.


GNS3 is the most popular Windows, Mac & Linux alternative to NetSim.
GNS3 is the most popular Open Source & free alternative to NetSim.
- GNS3 is Free and Open Source
NetSim is described as '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' and is an app. There are seven alternatives to NetSim for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best NetSim alternative is GNS3, which is both free and Open Source. Other great apps like NetSim are Cisco Packet Tracer, Eve-NG, Dynamips and MaSSHandra.
GNS3 is a graphical network simulator that allows simulation of complex networks.


GNS3 is the most popular Windows, Mac & Linux alternative to NetSim.
GNS3 is the most popular Open Source & free alternative to 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.




Cisco Packet Tracer is the most popular Android, iPhone, iPad & Android Tablet alternative to NetSim.
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.




Dynamips is an emulator computer program that was written to emulate Cisco routers. It has been created by Christophe Fillot who started his work in August 2005. Dynamips runs on Linux, Mac OS X or Windows and can emulate the hardware of the Cisco series routing platforms by...

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.




Kathará is an open source container-based network emulation system for showing interactive demos/lessons, testing production networks in a sandbox environment, or developing new network protocols.
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.


Cable Project CAD is the most popular commercial alternative to NetSim.