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GNS3 icon

GNS3

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

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  • Mac
  • Windows
  • Linux
GNS3 screenshot 1
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  1.  Educational

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  • NetPilot icon
    NetPilot added GNS3 as alternative to NetPilot
  • BadAzzKunt26 liked GNS3
  • Begenmedikler1m liked GNS3
  • kasper jack liked GNS3

GNS3 information

AlternativeTo Categories

Network & Admin, Education & Reference

GitHub repository

  •  2,638 Stars
  •  476 Forks
  •  128 Open Issues
  •   Updated  
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Our users have written 1 comments and reviews about GNS3, and it has gotten 50 likes

GNS3 was added to AlternativeTo by deranjer on and this page was last updated .

Comments and Reviews

   
aviallon
0

Opensource, much easier to setup and package than Packet Tracer. Better support for Linux overall

Review from a new or low-activity account — shown here, but not counted in the app rating.

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What is GNS3?

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

To provide complete and accurate simulations, GNS3 is strongly linked with:

Dynamips, a Cisco IOS emulator. Qemu, a generic and open source machine emulator and virtualizer. VirtualBox, a free and powerful virtualization software. GNS3 is an excellent complementary tool to real labs for network engineers, administrators and people wanting to study for certifications such as Cisco CCNA, CCNP, CCIP and CCIE as well as Juniper JNCIA, JNCIS and JNCIE.

It can also be used to experiment features of Cisco IOS, Juniper JunOS or to check configurations that need to be deployed later on real routers.

Thanks to VirtualBox integration, now even system engineers and administrators can take advantage of GNS3 to study Redhat (RHCE, RHCT), Microsoft (MSCE, MSCA), Novell (CLP) and many other vendor certifications.

This project is an open source, free program that may be used on multiple operating systems, including Windows, Linux, and MacOS X.