Free GNS3 Alternatives

    The best free alternative to GNS3 is Cisco Packet Tracer. If that doesn't suit you, our users have ranked six alternatives to GNS3 and four of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to GNS3 are Dynamips (Free, Open Source), Eve-NG (Freemium, Open Source) and Free SNMP Agent Simulator (Freemium).

    This page was last updated May 12, 2021

      • FreeProprietary
      • Mac
      • Windows
      • Linux
      • Android
      • iPhone
      • Android Tablet
      • iPad
      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.
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      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      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.


      • FreemiumOpen Source
      • Linux
      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.
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    1. Verax SNMP agent simulator allows IT personnel to build virtual, simulated networks of devices without purchasing any additional hardware, for instance for testing purposes.
      Free SNMP Agent Simulator vs GNS3 opinions
      pros, cons and recent comments
      sdrawkcab Simulator for devices using exclusively the SNMP protocol, but not a true virtual network simulator such as GNS3 or Cisco Packet Tracer.
      Negative comment over 3 years ago

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    Showing 4 of 4 alternatives