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Cisco Modeling Labs alternatives: 2 apps ranked by verified data

Facts checked Nov 1, 2026AppBreakup editorialHow we rank

Common reasons people leave Cisco Modeling Labs: free tier is limited to five nodes, and personal licences cannot be expanded beyond their node cap. We ranked 2 alternatives by how directly each one replaces Cisco Modeling Labs, then by reviews, real visits and how recently each app's facts were checked against its own website. GNS3 currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1GNS3 logoGNS3Open sourceYesWindows, macOS, Linux +14 of 466.5
  1. GNS3 logo

    1. GNS3Top pick

    Best for: Network engineers and CCNA/CCNP students who want free labs running real device images

    Open sourceSelf-hostableWindows, macOS, Linux, Self-hosted

    66.5

    score / 100

    Why switch from Cisco Modeling Labs

    Free and open source with no node limit, if you can supply your own images.

    Pros

    • Free and open source under GPL v3
    • Runs real vendor images, not a simplified simulation
    • Mixes Dynamips, QEMU, VirtualBox, VMware and Docker nodes
    • One server can be shared by several clients

    Cons

    • You must source your own licensed router and switch images
    • Bigger labs need a separate VM and lots of RAM
    • Mac version is unsigned and needs Gatekeeper workarounds
    Visit GNS3 Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is GNS3 a good Cisco Modeling Labs alternative?

    Verified facts

    4 of 4 verified
    License
    GPL-3.0
    Checked Nov 1, 2026github.com(opens source in a new tab)
    Open source
    Yes, GNU GPL v3
    Checked Nov 1, 2026docs.gns3.com(opens source in a new tab)
    Minimum RAM (Windows)
    4 GB, 16 GB recommended
    Checked Nov 1, 2026docs.gns3.com(opens source in a new tab)
    macOS build
    Unsigned DMG
    Checked Nov 1, 2026docs.gns3.com(opens source in a new tab)

The best Cisco Modeling Labs alternative for…

The highest-ranked app in this list for each need.

GNS3 logo

Best Cisco Modeling Labs alternative for most people

GNS3

Free and open source with no node limit, if you can supply your own images.

GNS3 logo

Best Cisco Modeling Labs alternative for a free option

GNS3

Free and open source with no node limit, if you can supply your own images.

EVE-NG logo

Best Cisco Modeling Labs alternative for a free plan you can upgrade

EVE-NG

Multivendor browser-based labs with strong multi-user features for training centres.

GNS3 logo

Best Cisco Modeling Labs alternative for open source

GNS3

Free and open source with no node limit, if you can supply your own images.

GNS3 logo

Best Cisco Modeling Labs alternative for self-hosting

GNS3

Free and open source with no node limit, if you can supply your own images.

GNS3 logo

Best Cisco Modeling Labs alternative for Mac

GNS3

Free and open source with no node limit, if you can supply your own images.

GNS3 logo

Best Cisco Modeling Labs alternative for Windows

GNS3

Free and open source with no node limit, if you can supply your own images.

GNS3 logo

Best Cisco Modeling Labs alternative for Linux

GNS3

Free and open source with no node limit, if you can supply your own images.

EVE-NG logo

Best Cisco Modeling Labs alternative for working in the browser

EVE-NG

Multivendor browser-based labs with strong multi-user features for training centres.

Cisco Modeling Labs alternatives: common questions

What is the best alternative to Cisco Modeling Labs?

GNS3 ranks first right now. Free and open source with no node limit, if you can supply your own images.

Is there a free alternative to Cisco Modeling Labs?

Yes. GNS3 (open source) and EVE-NG (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Cisco Modeling Labs?

Yes: GNS3. GNS3 can also be self-hosted.

Which Cisco Modeling Labs alternatives work on Linux?

GNS3 runs on Linux.

Why do people switch from Cisco Modeling Labs?

The complaints we hear most: free tier is limited to five nodes; personal licences cannot be expanded beyond their node cap; mostly focused on Cisco gear.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Cisco Modeling Labs, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.