Free GNS3 Alternatives

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

GNS3 alternatives page was last updated

GNS3

Free • Open Source
Network Simulator

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

More about GNS3

Cisco Packet Tracer
Is this is a good alternative?
Yes
No
Free • Proprietary
Mac
Windows
Linux
Android
iPhone
Android Tablet
iPad
7 Cisco Packet Tracer alternatives
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 Windows, Android, Mac & iPhone alternative to GNS3.
- - Cisco Packet Tracer is the most popular free alternative to GNS3.
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Cisco Packet Tracer Features
Network Tools
Opinions about Cisco Packet Tracer as a Alternative to GNS3
Most users think Cisco Packet Tracer is a great GNS3 alternative.
Dynamips
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
5 Dynamips alternatives
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...
- - Dynamips is the most popular Open Source alternative to GNS3.
Dynamips has no features, suggest some!
Free SNMP Agent Simulator
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Network Simulator
Windows
Linux
4 Free SNMP Agent Simulator alternatives
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 has no features, suggest some!

Comments about Free SNMP Agent Simulator as a Alternative to GNS3
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•
0
Eve-NG
Is this is a good alternative?
Yes
No
Freemium • Open Source
Network Simulator
Online Education Service
Linux
6 Eve-NG alternatives
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.
Eve-NG has no features, suggest some!
Kathara
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
4 Kathara alternatives
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.
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Kathara Features
Support for Docker
DNS Server
Kubernetes
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