GNS3 for Windows

  • Free
  • In English
  • V 2.2.29
  • 4
  • (40)
  • Security Status

Softonic review

Free graphical network simulator

GNS3 is a graphical network simulator that allows users to create visual representations of virtual topologies. This software is quite flexible and it can be employed to configure a single workstation or a complex Cisco enterprise-level router. There is no charge to download this package and as it is an open-source framework, updates tend to take place on a frequent basis.

Primary Purpose and Uses

GNS3 is a tool that is primarily deployed by network developers and similar IT professionals. The primary benefit associated with this system is that it provides a graphical representation of the nodes within a system. This top-down perspective clearly illustrates real-time operations and therefore, any changes can be made within a relatively short amount of time. While boasting the ability to perform complex operations, the layout itself is quite straightforward. The user is presented with a menu found on the left-hand side of the page. This highlights any existing routers and switches that may be present.

Additional Applications

GNS3 also employs an emulation mode; useful when bench testing a new system or when troubleshooting an existing network. Of course, the programmer also has the ability to display and modify any source code (while observing the output). All files are available in a ZIP format for easy installation.


  • An in-depth means to graphically simulate in-house networks.
  • Any source code can be viewed and changed if required.


  • This program assumes that the user has sufficient coding experience.
  • Accessing in-depth details will require a registration with the official website.

Older versions

Program available in other languages

GNS3 for PC

  • Free
  • In English
  • V 2.2.29
  • 4
  • (40)
  • Security Status

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Laws concerning the use of this software vary from country to country. We do not encourage or condone the use of this program if it is in violation of these laws.