Icon of program: GNS3

Download GNS3 for Mac

  • Free
  • 4.3
    1
  • 116
  • V3.0.5

GNS3 free download. Always available from the Softonic serversGNS3 free download. Always available from trusted servers.

  • Free & fast downloadFree & fast downloader ()
  • Always available
  • Tested virus-free
Free Download for Mac

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Alternative GNS3 download from external server (availability not guaranteed)

From Softonic servers

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Safe Downloader

The Safe Downloader downloads the app quickly and securely via Softonic´s high-speed server, so that a trustworthy origin is ensured. In addition to virus scans, our editors manually check each download for you.

Advantages of the Safe Downloader:

  • Malware protection informs you if your download has installed additional unwanted software.
  • Discover additional software: Test new software that are waiting to be discovered in the downloader.
  • With us you have the choice to accept or skip additional software installs.

Program available in other languages

App specs

  • License

    Free

  • Version

    3.0.5
  • Latest update

  • Platform

    Mac

  • OS

    Mac OS X

  • Language

    English

  • Downloads

    116

    Last month's downloads

    • 3
  • Size

    136.45 MB

  • Developer

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Laws concerning the use of this software vary from country to country. We do not encourage or condone the use of this program if it is in violation of these laws.
Softonic

Is GNS3 safe?

100/100

Score result: Clean

This file passed a comprehensive security scan using VirusTotal technology. It is safe to download.

  • Virus free
  • Spyware free
  • Malware free
  • Verified by Security Partners

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Scan Info

Last scan
Tuesday, September 30, 2025
Scan provider
VirusTotal · Full report

File Integrity

File
GNS3_V3.0.5.dmg
SHA256
8980dd1162c583701db5c8c3e9354f608cda890e1888ed156996a5bcdcd0b53c
SHA1
cda0d3d990868d2d9aa8bdb3cada94184d415cd0

Softonic security commitment

GNS3 has been thoroughly scanned by our advanced security systems and verified by industry-leading partners. This file comes from the official developer and has passed all our security checks, showing no signs of viruses, malware, or spyware. For more information, visit our Security and Trust Center