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Best GNS3 Alternatives in 2026

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

  1. 1
    TRex Free plan apiLinuxMacself-hostedWeb Free7.4
    GNS3 vs TRex
  2. 2
    iperf3 Free plan apiLinuxMacself-hosted Free7.3
    GNS3 vs iperf3
  3. 3
    Netpicker Free plan apiLinuxself-hostedWeb $625/mo7.3
    GNS3 vs Netpicker
  4. 4
    perfSONAR Free plan apiLinuxself-hosted Free7.2
    GNS3 vs perfSONAR
  5. 5
    Ostinato Free trial apiLinuxMacself-hostedWin $12/mo6.8
    GNS3 vs Ostinato
  6. 6
    IP Fabric Free trial apiLinuxself-hostedWeb 6.7
    GNS3 vs IP Fabric
  7. 7
    Cisco pyATS Free plan LinuxMacself-hosted Free5.9
    GNS3 vs Cisco pyATS
  8. 8
    EVE-NG Free plan LinuxMacself-hostedWebWin Free5.9
    GNS3 vs EVE-NG
  9. 9
    LibreSpeed Free plan AndroidLinuxMacself-hostedWeb Free5.9
    GNS3 vs LibreSpeed
  10. 10
    PingPlotter Free plan iOSLinuxMacWebWin $29/mo5.9
    GNS3 vs PingPlotter
  11. 12
    Invariant Web 5.1
    GNS3 vs Invariant
  12. 13
    M-Lab NDT WebAndroid 5.1
    GNS3 vs M-Lab NDT
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