18.8
Checkmk monitors cloud, hybrid, and data center infrastructure, including containers, networks, and web, mail, and database servers.
Free planOpen sourceAndroidiOSWeb
Best Network Monitoring - Midmarket Software in 2026
Network monitoring software helps teams watch infrastructure through SNMP monitoring, automatic discovery, flow analysis and alerts. This category includes web, API, Linux, self-hosted, Windows and macOS deployments. Compare the monitoring methods, alert channels, deployment model and monitored-device limit.
28.3
Centreon is an IT monitoring platform for complex infrastructure spanning cloud environments and edge systems.
Free planOpen sourceWebAPILinux
38.3
ManageEngine OpManager monitors and manages network infrastructure from a unified console.
Free planAndroidiOSWeb
- 4
Obkio
Obkio is a network performance monitoring and troubleshooting service for identifying intermittent network issues.
Free planAndroidiOSWebAPI8.2From $249 a month - 5
Nagios XI
Nagios XI is monitoring software installed on a Linux server you own.
Free planWebAPILinuxmacOS8.1$2,595 one-time - 6
Paessler PRTG Network Monitor
Paessler PRTG Network Monitor monitors systems, devices, traffic, applications, and other infrastructure metrics from an on-premises installation…
Free planAndroidiOSWebAPI7.7From $200 a month - 7
Domotz
Domotz is a cloud-based platform for discovering, monitoring, and remotely managing network-connected devices across multiple sites.
AndroidiOSWebAPI7.3From $1.50 a month - 8
NetXMS
NetXMS is an open-source solution for monitoring networks and infrastructure.
Free planAndroidWebAPILinux7.2Free plan - 9
WhatsUp Gold
WhatsUp Gold is infrastructure management software for monitoring networks and related resources across on-premises and cloud environments.
Free planWebAPISelf-hostedWindows7.2From $866 a year - 10
Site24x7 Network Monitoring
Site24x7 Network Monitoring is a cloud service that tracks network health, performance, and traffic from a centralized console.
AndroidiOSWebAPI7.1From $42 a month - 11
LibreNMS
LibreNMS is a free, self-hosted network monitoring system with device support.
Free planAndroidiOSWebAPI6.9Free plan - 12
Kentik Network Monitoring System
Kentik Network Monitoring System is a SaaS service for monitoring network health and performance.
WebAPI6.6From $24,000 a year - 13
Zabbix
Zabbix is an open-source monitoring and observability solution for infrastructure, applications, networks, and services.
WebAPILinuxmacOS6.6 - 14
Automic Continuous Delivery Automation
Automic Continuous Delivery Automation orchestrates application releases and deployments, with real-time monitoring and release reporting.
WebAPILinuxSelf-hosted6.5 - 15
Observium
Observium is a self-hosted platform for monitoring and managing networks.
Free planWebAPILinuxSelf-hosted6.5Free plan - 16
Plixer Scrutinizer
Plixer Scrutinizer analyzes NetFlow data to show network traffic activity and operational patterns.
WebAPISelf-hosted6.5From $12,996 a year - 17
Cacti
Cacti is a free, self-hosted framework for network graphing and operational monitoring, built around RRDtool.
Free planWebLinuxSelf-hostedWindows6.4Free plan - 18
Progress Flowmon
Progress Flowmon is a network and security monitoring platform that uses AI-based detection to identify threats and anomalies while providing network…
WebAPILinuxSelf-hosted6.0 - 19
Nagios Core
Free planAPILinuxSelf-hosted5.9Free plan - 20
SolarWinds Network Performance Monitor
SolarWinds Network Performance Monitor (NPM) is paid, self-hosted software for monitoring complex, hybrid, multi-vendor networks.
WebSelf-hostedWindows5.9 - 21
LiveAction LiveNX
WebWindows4.9 - 224.8
- 23
NEC MasterScope Network Manager
WebWindows4.8 - 244.7
- 254.5
Choosing well
Compare free and paid options
A free plan is available from products in this category, while other products use paid pricing or pricing on request. Check what the free plan covers before choosing it for a production network.
Published examples include Cacti, LibreNMS and Nagios Core as free plans. Checkmk, Domotz and ManageEngine OpManager list free plans with paid tiers; trial terms differ by product.
Match the monitoring methods
Check whether the product covers the methods you need: SNMP monitoring, automatic discovery and flow analysis. These options affect how you find devices and understand traffic.
Review the monitored-device limit alongside those capabilities so the plan fits your environment.
Review alert channels
Compare the alert channels before selecting a tool. Confirm that the available channels fit the way your team receives and handles network warnings.
Choose a deployment model
Products in this category run through web interfaces, APIs, Linux, self-hosted setups, Windows or macOS. Pick the deployment that matches your infrastructure and administration workflow.
Use trial terms carefully
A free trial is offered by products in this category, but trial lengths and pricing vary. For example, Checkmk, Kentik Network Monitoring System, ManageEngine OpManager and Nagios XI list 30-day trials, while Domotz lists 14 days.
Confirm whether a trial requires payment details and what happens when it ends.
Questions people ask
Can I start with a free plan?
Yes. Products in this category offer free plans, including Cacti, Checkmk, Domotz, LibreNMS, ManageEngine OpManager, Nagios Core and Nagios XI.
Which deployment types are available?
The listed deployment platforms are web, API, Linux, self-hosted, Windows and macOS. Confirm the exact options for the product you are considering.
Do these tools support SNMP monitoring?
SNMP monitoring is one of the comparison fields for this category. Check the individual product details to confirm coverage and plan limits.
Are free trials available?
Yes. Trial availability and length vary. Listed examples include 30-day trials for Checkmk, Kentik Network Monitoring System, ManageEngine OpManager and Nagios XI, and a 14-day trial for Domotz.