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    GNS3

    Your Virtual Network in a Suitcase

    • Free • Open Source
    • Mac
    • Windows
    • Linux
    ▼

    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.
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    Comments and Reviews Post a comment / review
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    aviallon
    ★
    ★
    ★
    ★
    ★
    • Top positive comment  8 months ago • 0 replies
    If this Review contains spam or other abuse, notify admins about it.

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

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    0

    Said about GNS3 as an alternative

    GNS3 is Free software (FLOSS)
    Positive comment • almost 5 years ago • as an alternative to  Cisco Packet Tracer Cisco Packet Tracer

    quite similiar to the features of cisco packet tracer
    Positive comment • almost 5 years ago • as an alternative to  Cisco Packet Tracer Cisco Packet Tracer

    Tags

    • cisco
    • juniper
    • virtualbox
    • network-simulation

    List containing GNS3

    Productive Daily-use Linux Setup
    Main screen
    GNS3

    Links and Download

     Official Website

    Other

    GitHub

    Social

    GNS3

    Summary

    Our users have written 1 comments and reviews about GNS3, and it has gotten 34 likes

    • Open Source and Free product.
    • 6 alternatives listed

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    GNS3 was added to AlternativeTo by deranjer on Nov 16, 2011 and this page was last updated May 12, 2021.

    Recent user activities on GNS3

    • mi
      mionemedia liked GNS3
      18 days ago
    • av
      aviallon edited GNS3
      8 months ago
    • av
      aviallon reviewed GNS3
      Opensource, much easier to setup and package than Packet Tracer. Better support for Linux overall
      8 months ago