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Best Network Testing Software in 2026
Network testing tools help you examine connectivity and network behavior using different testing approaches. Compared on test methods and protocol support, these entries can be assessed for the kinds of checks you need to carry out. Deployment choices, scheduled tests, distributed agents, and API access provide more ways to compare how a tool could fit into your environment. LibreSpeed, PingPlotter, and TRex are among the options shown. Free-plan availability and paid-from pricing are also listed, giving you cost context alongside the technical criteria as you consider which capabilities align with your testing work.
- 33 apps
- Research read 23 Sept 2026
- How the order is worked out
- 1
Avidemux
Free plan Open source LinuxMacWeb+1 - 2
iPerf2
Free plan Open source AndroidiPhoneLinux+3iPerf2 offers a broad set of active TCP and UDP measurements, with multicast support and CSV reporting.
- 3
EVE-NG
Free plan LinuxMacSelf-hosted+2EVE-NG offers network emulation and lab-building features across free and paid plans. Check the free node and role limits, and note that Community Edition support and end of life ended in June 2026.
- 4
Cisco pyATS
Free plan LinuxMacSelf-hostedCisco pyATS combines reusable network tests, device libraries, and test-suite management in a free framework.
- 5
GitHub CodeQL
Free plan ExtensionLinuxMac+3 - 6
GNS3
Free plan LinuxMacSelf-hosted+2GNS3 supports multi-vendor network lab work without license fees, with practical scale tied to the host computer.
- 7
Batfish
Free plan APILinuxMac+2Choose Batfish if you need configuration-based checks for policy, security, change impact, or network resilience.
- 8
iperf3
Free plan APILinuxMac+1Choose iperf3 if you need configurable IP bandwidth measurements, structured output, or a library for integration into other programs.
- 9
LibreSpeed
Free plan AndroidLinuxMac+3LibreSpeed combines routine connection measurements with a separate stability test and several self-hosting options.
- 10
Mininet
Free plan APILinuxMac+2Mininet provides a free way to build and investigate virtual networks using Linux networking and OpenFlow.
- 11
Flent
Free plan LinuxMacChoose Flent if you need a free, open-source desktop tool for repeatable network experiments, particularly bufferbloat testing.
- 12
Invariant
Free plan APIWebChoose Invariant if you need to evaluate network policies against configurations or proposed changes, with automation and scheduled monitoring available.
- 13
Netpicker
Free plan APILinuxSelf-hosted+1Netpicker combines network testing, backup and security validation with on-premises and air-gapped deployment options.
- 14
OpenSpeedTest
Free plan AndroidiPhoneLinux+4OpenSpeedTest provides browser-based measurements and configurable embedding, with self-hosting options for organizations that want to run it in their own environment.
- 15
Netperf
Free plan LinuxMacWindowsNetperf provides configurable network performance measurements, but users should account for source installation and optional test setup.
- 16
PingPlotter
Free plan APIiPhoneLinux+3PingPlotter provides desktop monitoring and a centralized Cloud option, with alerts and analysis for troubleshooting.
- 17
M-Lab NDT
Free plan AndroidAPIiPhone+2M-Lab NDT provides free connection measurements and publishes results for Internet research.
- 18
MoonGen
Free plan LinuxSelf-hostedChoose MoonGen if you need a free Linux packet generator with scriptable traffic control and network measurement.
- 19
Tessabyte
Free plan iPhoneLinuxMac+1Tessabyte combines active network tests with charting, payload customization, and reports. Its free server and 30-day evaluation offer ways to assess the setup before purchasing client licenses.
- 20
perfSONAR
Free plan APILinuxSelf-hostedperfSONAR provides coordinated network measurement and data access for operators managing their own deployment. It is free to use, but maintaining nodes and test configuration is part of running it.
- 21
TRex
Free plan APILinuxMac+3TRex offers several traffic-generation modes, protocol emulation, and automation interfaces for benchmarking and testing.
- 22
SmokePing
Free plan LinuxSelf-hostedWebSmokePing provides detailed latency and packet-loss monitoring, with graph navigation, configurable alarms, and distributed measurement options.
- 23
Pktgen-DPDK
Free plan LinuxSelf-hostedChoose Pktgen-DPDK if you need a free, self-hosted packet generator with varied traffic modes and measurement options.
- 24
Testground
Free plan APILinuxSelf-hostedTestground provides broad controls for distributed-system experiments, including large-scale runners, network simulation, coordination, and metrics.
- 25
Forward Enterprise
Free trial APISelf-hostedWebForward Enterprise brings network modeling, verification, and security visibility together for enterprise-scale environments.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
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