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IT & Infrastructure

Best Network Testing Software in 2026

Checking network behavior can involve different protocols, test methods, and ways to run tests. Compared on protocol support and test methods, these tools also vary in deployment, scheduled tests, distributed agents, and API access.

  1. 01 iPerf2

    iPerf2 suits people who need active TCP or UDP network measurements across supported platforms, including teams that can set up a client and server.

    Free plan Open source Windows · macOS · Linux · iOS
    8.8 Visit Specs
  2. 02 PingPlotter

    PingPlotter suits home users troubleshooting a network, small offices monitoring their network, and remote teams using Cloud.

    From $6.99/mo Free plan Web · Windows · macOS · Linux
    8.8 Visit Specs
  3. 03 GitHub CodeQL
    From $30/mo Free plan Web · Windows · macOS · Linux
    8.7 Visit Specs
  4. 04 Mininet

    Mininet suits developers, researchers and learners working with Linux-based network prototypes or SDN experiments.

    Free plan Windows · macOS · Linux · API
    8.6 Visit Specs
  5. 05 Avidemux
    Free plan Open source Web · Windows · macOS · Linux
    8.3 Visit Specs
  6. 06 Cisco pyATS

    It suits network teams that need reusable testing and validation workflows for Cisco devices, with room to extend platform coverage through plugins.

    Free plan macOS · Linux · Self-hosted
    8.2 Visit Specs
  7. 07 EVE-NG

    EVE-NG suits network, security, and DevOps professionals building emulated labs or training environments.

    Free plan Web · Windows · macOS · Linux
    8.2 Visit Specs
  8. 08 Netpicker

    Netpicker is aimed at network and NetDevOps engineers who need configuration checks, backups, security validation or remediation.

    From $625/mo Free plan Web · Linux · API · Self-hosted
    8.2 Visit Specs
  9. 09 GNS3

    It suits network engineers, learners, and others working on education, certification practice, proofs of concept, demonstrations, or interoperability testing.

    Free plan Web · Windows · macOS · Linux
    8.1 Visit Specs
  10. 10 iperf3

    It suits network engineers and developers measuring TCP, UDP, or SCTP performance, especially perfSONAR users and people who need machine-readable output or a reusable library.

    Free plan macOS · Linux · API · Self-hosted
    8.1 Visit Specs
  11. 11 Ostinato

    Ostinato suits network teams that need to generate or replay traffic for validation and analysis.

    From $12/mo Free trial Windows · macOS · Linux · API
    8.1 Visit Specs
  12. 12 Batfish

    Batfish suits network engineers who want configuration-based policy, security, reliability and change analysis.

    Windows · macOS · Linux · API
    8.0 Visit Specs
  13. 13 LibreSpeed

    LibreSpeed suits people or organizations seeking a free speed test they can self-host, with optional telemetry and result storage.

    Free plan Web · Windows · macOS · Linux
    8.0 Visit Specs
  14. 14 OpenSpeedTest

    OpenSpeedTest suits people checking a connection in a browser, as well as teams that want an embedded test or a self-hosted deployment.

    Free plan Web · Windows · macOS · Linux
    7.9 Visit Specs
  15. 15 TRex

    TRex suits network teams benchmarking devices, testing switches, or generating stateful and stateless traffic.

    Free plan Web · Windows · macOS · Linux
    7.9 Visit Specs
  16. 16 Flent
    Free plan macOS · Linux
    7.8 Visit Specs
  17. 17 Forward Enterprise
    Free trial Web · API · Self-hosted
    7.8 Visit Specs
  18. 18 Invariant

    Invariant suits network and security operators assessing reachability, security policies, and planned network changes.

    Free plan Web · API
    7.8 Visit Specs
  19. 19 IP Fabric
    Free trial Web · Linux · API · Self-hosted
    7.8 Visit Specs
  20. 20 M-Lab NDT
    Web · Linux · iOS · Android
    7.7 Visit Specs
  21. 21 Netperf

    It suits people familiar with networking protocols who need active throughput or latency measurements on Linux, macOS, or Windows.

    Free plan Windows · macOS · Linux
    7.7 Visit Specs
  22. 22 Tessabyte

    Tessabyte suits professionals measuring network quality who want client-server testing across wired or wireless connections.

    Free trial Windows · macOS · Linux · iOS
    7.7 Visit Specs
  23. 23 MoonGen
    Free plan Linux · Self-hosted
    7.5 Visit Specs
  24. 24 perfSONAR

    perfSONAR suits science facilities, campuses, laboratories, network providers, exchange points, virtual organizations, researchers, and software or service developers.

    Free plan Linux · API · Self-hosted
    7.5 Visit Specs
  25. 25 SmokePing
    Free plan Web · Linux · Self-hosted
    7.4 Visit Specs
How this list is ordered. Specifiction scores each tool on how fully its maker documents it, whether its prices are published, where the research puts it, the platforms it runs on and whether it can be tried for free (how we rank). Makers can also buy a numbered place (how Specifiction is paid for).

Free-plan availability and paid starting price can help put those capabilities in context. PingPlotter, LibreSpeed, and TRex are among the options to examine against your testing needs. Consider what kinds of checks you need, whether tests should run on a schedule, and how the deployment and access details align with the environment you work in.

Compare iPerf2 and PingPlotter Get a place on this list

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