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Best GNS3 Alternatives in 2026

12 apps from network testing software ranked against GNS3 on the same published basis.

  1. 1
    LibreSpeed Free plan AndroidLinuxMacself-hostedWeb Free7.4
    GNS3 vs LibreSpeed
  2. 2
    PingPlotter Free plan iOSLinuxMacWebWin $29/mo7.4
    GNS3 vs PingPlotter
  3. 3
    EVE-NG Free plan LinuxMacself-hostedWebWin Free7.2
    GNS3 vs EVE-NG
  4. 4
    TRex Free plan apiLinuxMacself-hostedWeb Free7.2
    GNS3 vs TRex
  5. 6
    iperf3 Free plan apiLinuxMacself-hosted Free7.0
    GNS3 vs iperf3
  6. 7
    Netpicker Free plan apiLinuxself-hostedWeb $625/mo7.0
    GNS3 vs Netpicker
  7. 8
    Cisco pyATS Free plan LinuxMacself-hosted Free6.9
    GNS3 vs Cisco pyATS
  8. 9
    OpenSpeedTest WebWinMacLinuxiOS 6.9
    GNS3 vs OpenSpeedTest
  9. 10
    perfSONAR Free plan apiLinuxself-hosted Free6.7
    GNS3 vs perfSONAR
  10. 11
    iPerf2 WinMacLinuxAndroid 6.6
    GNS3 vs iPerf2
  11. 12
    M-Lab NDT WebAndroid 6.5
    GNS3 vs M-Lab NDT
  12. 13
    Ostinato Free trial apiLinuxMacself-hostedWin $12/mo6.4
    GNS3 vs Ostinato
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