A graphical network simulator to design and configure virtual networks

GNS3 for Mac

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GNS3 2.1.12

  -  40.3 MB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of GNS3 2.1.12.


For those interested in downloading the most recent release of GNS3 for Mac or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


We would love to hear from you

If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download GNS3 2.1.12

  • GNS3 2.1.12 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    GNS3 2.1.12 Screenshot 1
  • GNS3 2.1.12 Screenshot 2
  • GNS3 2.1.12 Screenshot 3
  • GNS3 2.1.12 Screenshot 4

What's new in this version:

- Option to resize SVG symbols that are too big (height above 80px, activated by default)
- Update VMware banners and links
- Allow users to refresh the template list in the nodes view panel
- Fix Dynamips decompress doesn't work with relative images
- Update download URL for "Check For Update"
- Tune how to get the size of SVG images
- Automatically create a symbolic link to the IOU image in the IOU working directory
- Fix link pause/filters only work for the first interface of Docker containers
- Telnet console resize support for Docker VM
- Fix _fix_permissions() garbles permissions in Docker VM
- Fix "None is not of type 'integer'" when opening project containing a Qemu VM
- Only require Xtigervnc or Xvfb+x11vnc for Docker with vnc console
- Support tigervnc in Docker VM
- Update minimum VIX version requirements for VMware

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