GNS3for Windows



To strengthen your planning and development skills

GNS3 is an essential part of training for new network engineers and professionals. It is wonderful as it avoids the need for purchasing physical equipment at a high cost.

Empowers network professionals

GNS3 covers all levels of complexity and allows you to view, and make changes in real-time.

GNS3 is an open source software for network planning and development. It allows users to simulate network performance and is a rival Cisco’s packet tracer. In fact, the functionality of the two programs differ to the extent that you should be using both.

GNS3 runs real IOS and has no emulation or unusual behavior. It is the first choice for students. GNS3 has hundreds of topologies for you to take advantage of. There is no need for physical hardware. This is both a time and cost-saver for networkers.

The software allows you to simulate routers as in the real world. You need to upload an IOS to begin using the software. These are usually licensed, and a good example is Cisco c3600. You can configure everything you need within the platform itself. There is no requirement for a command line interface which is an excellent feature.

GNS3 covers all levels of complexity and allows you to view, and make changes in real-time. This is ideal for students as you can use it for straightforward builds when first starting. The information you can gain from it will help you learn fast.

The networking community advises that it is best run on Linux where possible. Although users report that GNS3 still performs when running on Windows or Mac OS.

Where can you run this program?

This program runs on Windows, Mac OS, and Linux. The software is open-source, so each installation process is slightly different.

Is there a better alternative?

No, Cisco VIRL and packet tracer are comparable. Yet, GNS3 is the user-friendly option. There are some crossovers between the platforms. Network engineers should probably be using both options to get the best results.

Our take

If you are a network engineer, then this software is a must. The functionality within this program is second to none. You should be looking at GNS3 for your networking simulation requirements.

Should you download it?

Yes, GNS3 has everything you need to plan and test your networking project.


  • No need for hardware
  • Stable and not emulated
  • Free to download
  • Runs on various OS


  • High CPU usage
  • Requires OS image from Cisco
  • Installation process differs on other platforms

Program available in other languages

GNS3for Windows


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