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Best Network Monitoring - Midmarket Software in 2026

  1. 1

    Centreon

    by Centreon
    Free plan Open source APILinuxSelf-hosted+2

    Centreon combines broad infrastructure monitoring with SaaS and self-hosted deployment options. Its free plan covers 100 hosts, while paid editions add options at listed per-host prices.

    9.2 Free plan · paid from €2.27 · 7-day trial Visit site
  2. 2

    Checkmk

    Free plan Open source AndroidAPIiPhone+5

    Checkmk offers broad infrastructure coverage and several monitoring methods, with a free Community option for smaller environments.

    9.2 Free plan · paid from €190/mo (annual) · 30-day trial Visit site
  3. 3

    Cacti

    Free plan LinuxSelf-hostedWeb+1

    Cacti combines network data collection, availability checks, graphing, and distributed polling in a self-hosted package.

    7.7 Free plan Visit site
  4. 4

    Domotz

    Free plan AndroidAPIiPhone+4

    Domotz combines device discovery and monitoring with remote management and network diagnostics. A free discovery tier is available, while ongoing paid options are billed per device or collector.

    7.6 Free plan · paid from $1.50/mo · 14-day trial Visit site
  5. 5

    LibreNMS

    Free plan AndroidAPIiPhone+3

    LibreNMS provides broad network discovery, alerting, and monitoring capabilities at no listed plan cost. It is self-hosted, with community help and partner-provided commercial support available.

    7.5 Free plan Visit site
  6. 6

    ManageEngine OpManager

    Free plan AndroidAPIiPhone+4

    OpManager brings infrastructure metrics, traffic analysis, alerts, and troubleshooting into one self-hosted product.

    7.4 Free plan · paid from $95 · 30-day trial Visit site
  7. 7

    Nagios XI

    Free plan APILinuxMac+3

    Nagios XI offers self-hosted monitoring, a limited free edition, and perpetual paid licenses priced by node count.

    7.3 From $4,995 · 30-day trial Visit site
  8. 8

    Nagios Core

    Free plan APILinuxSelf-hosted
    7.2 Free plan Visit site
  9. 9

    NetXMS

    Free plan AndroidAPILinux+4

    NetXMS combines discovery, topology maps, protocol support, and distributed monitoring in an open-source solution.

    7.2 Free plan Visit site
  10. 10

    Obkio

    Free plan AndroidAPIiPhone+4

    Obkio combines synthetic performance checks with device monitoring, application checks, and traceroutes.

    7.2 Free plan · 14-day trial Visit site
  11. 11

    Observium

    Free plan APILinuxSelf-hosted+1

    Observium offers a free Community edition and paid editions with additional alerting, traffic accounting, or support features.

    7.2 Free plan · paid from £250/yr Visit site
  12. 12

    Paessler PRTG Network Monitor

    Free plan AndroidAPIiPhone+5

    PRTG combines on-premises infrastructure monitoring with alerts, reports, dashboards, and an API. Check sensor needs and the single-license-per-server limit when choosing a plan.

    7.1 Free plan · paid from $200/mo (annual) · 30-day trial Visit site
  13. 13

    Site24x7 Network Monitoring

    Free plan AndroidAPIiPhone+4

    Site24x7 Network Monitoring combines device discovery, live metrics, flow analysis, maps, integrations, and mobile access.

    7.0 From $42/mo (annual) · 30-day trial Visit site
  14. 14

    Zabbix

    Free plan APILinuxMac+3

    Zabbix covers a broad range of monitoring sources and methods, with synthetic browser checks and a free plan. Subscription support and server or proxy allowances vary by tier.

    6.9 Free plan · paid from $50/mo · 5-day trial Visit site
  15. 15

    Automic Continuous Delivery Automation

    Free trial APILinuxSelf-hosted+1
    6.6 Pricing on request Visit site
  16. 16

    Kentik Network Monitoring System

    Free trial APIWeb

    Kentik NMS brings network metrics, flow data, synthetic tests, and troubleshooting tools into a SaaS service.

    6.1 From $2,000/mo (annual) · 30-day trial Visit site
  17. 17

    Progress Flowmon

    Free trial APILinuxSelf-hosted+1

    Choose Progress Flowmon if you need network visibility and behavior-based security monitoring in one platform, with deployment options spanning virtual, cloud, and hardware appliances.

    5.9 Pricing on request · 30-day trial Visit site
  18. 18

    Plixer Scrutinizer

    Free trial APISelf-hostedWeb

    Scrutinizer provides flow analytics, dashboards, and deployment options for network and security operations teams.

    5.8 Pricing on request Visit site
  19. 19

    WhatsUp Gold

    Free trial APISelf-hostedWeb+1

    WhatsUp Gold brings infrastructure monitoring, topology mapping, automation, and integrations into one product.

    5.8 Free plan · paid from $1,229 · 30-day trial Visit site
  20. 20

    SolarWinds Network Performance Monitor

    Free trial Self-hostedWebWindows

    NPM combines device monitoring with path analysis, alerts, wireless visibility, and capacity forecasts.

    5.7 From $2,829 · 30-day trial Visit site
  21. 21
    4.4 Pricing on request Visit site
  22. 22

    LiveAction LiveNX

    Paid WebWindows
    4.4 Pricing on request Visit site
  23. 23
    4.3 Pricing on request Visit site
  24. 24
    4.0 Pricing on request Visit site
  25. 25
    4.0 Pricing on request Visit site

#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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