Checkmk may suit teams monitoring servers, networks, cloud environments, or hybrid infrastructure.
Free plan Free trial Open source From $275 a month, billed yearly AndroidiPhone & iPadWebWindowsMacLinux+2
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Best Network Monitoring - Midmarket Software 2026
Facts read 20 Sep 2026 – 19 Oct 2026
Network monitoring software helps midmarket teams watch devices, services and traffic from a central view. This list is for buyers comparing tools before choosing a deployment and pricing model.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 Checkmk | Checkmk may suit teams monitoring servers, networks, cloud environments, or hybrid infrastructure. | 6.8 | $275 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, Windows | 14 Oct 2026 |
| 02 Obkio | Obkio may suit small businesses, multisite organizations, MSPs, remote users, nonprofits, and colleges or universities. | 6.6 | $249 a month | Free plan | Android, iPhone & iPad, Web, Windows | 14 Oct 2026 |
| 03 Paessler PRTG Network Monitor | PRTG is intended for small and medium IT infrastructures, with features for OT and IoT environments. | 6.5 | $200 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, Windows | 30 Sep 2026 |
| 04 Domotz | Domotz may suit managed service providers, IT departments, system integrators, and security professionals managing devices across sites. | 6.4 | $1.50 a month | Free plan | Android, iPhone & iPad, Web, Windows | 30 Sep 2026 |
| 05 ManageEngine OpManager | The free edition is described as suited to small networks and labs. | 6.4 | $95 a year | Free plan | Android, iPhone & iPad, Web, Windows | 15 Oct 2026 |
| 06 Centreon | Centreon suits IT teams monitoring infrastructure that spans servers, networks, cloud, applications, or edge systems. | 6.1 | €2.27 a year | Free plan | Web, Windows, Linux, API | 19 Oct 2026 |
| 07 Nagios XI | It suits organizations that can operate a Linux server and want to monitor infrastructure under configured thresholds. | 6.0 | $2,595 one-time | Free plan | Web, Windows, Mac, Linux | 15 Oct 2026 |
| 08 Site24x7 Network Monitoring | It may suit IT and DevOps teams, from startups and small businesses to enterprises and government organizations, monitoring network devices and traffic. | 5.9 | $42 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, Windows | 7 Oct 2026 |
| 09 NetXMS | NetXMS is intended for network and infrastructure monitoring, as well as application, server, service-provider, payment-switch, and industrial-equipment monitoring. | 5.5 | Free plan | Free plan | Android, Web, Windows, Mac | 2 Oct 2026 |
| 10 LibreNMS | LibreNMS is suited to network administrators who want a self-hosted monitoring system with discovery, alerting, and traffic visibility. | 5.0 | Free plan | Free plan | Android, iPhone & iPad, Web, Linux | 4 Oct 2026 |
Review free-plan availability, starting paid prices, SNMP support, automatic discovery, flow analysis, alert routes, deployment choices and device limits. The list is rebuilt nightly, so its order can change.
02
Obkio
Obkio may suit small businesses, multisite organizations, MSPs, remote users, nonprofits, and colleges or universities.
AndroidiPhone & iPadWeb+4 Record6.6 Visit
03
Paessler PRTG Network Monitor
PRTG is intended for small and medium IT infrastructures, with features for OT and IoT environments.
AndroidiPhone & iPadWeb+5 Record6.5 Visit
04
Domotz
Domotz may suit managed service providers, IT departments, system integrators, and security professionals managing devices across sites.
AndroidiPhone & iPadWeb+4 Record6.4 Visit
05
ManageEngine OpManager
The free edition is described as suited to small networks and labs.
AndroidiPhone & iPadWeb+4 Record6.4 Visit
6
Centreon
WebWindowsLinux+2 €2.27 a year Record6.1 Visit Centreon suits IT teams monitoring infrastructure that spans servers, networks, cloud, applications, or edge systems.
7
Nagios XI
WebWindowsMac+3 $2,595 one-time Record6.0 Visit It suits organizations that can operate a Linux server and want to monitor infrastructure under configured thresholds.
8
Site24x7 Network Monitoring
AndroidiPhone & iPadWeb+4 $42 a month, billed yearly Record5.9 Visit It may suit IT and DevOps teams, from startups and small businesses to enterprises and government organizations, monitoring network devices and traffic.
9
NetXMS
AndroidWebWindows+4 Free plan Record5.5 Visit NetXMS is intended for network and infrastructure monitoring, as well as application, server, service-provider, payment-switch, and industrial-equipment monitoring.
10
LibreNMS
AndroidiPhone & iPadWeb+3 Free plan Record5.0 Visit LibreNMS is suited to network administrators who want a self-hosted monitoring system with discovery, alerting, and traffic visibility.
11
WhatsUp Gold
WebWindowsAPI+1 $866 a year Record5.0 Visit It suits IT teams monitoring mixed network, server, application, cloud, and virtualization environments.
12
Zabbix
WebWindowsMac+3 Free plan Record4.9 Visit Zabbix suits teams monitoring infrastructure, applications, networks, or services across a range of operating systems and data sources.
13
Cacti
WebWindowsLinux+1 Free plan Record4.7 Visit Cacti suits teams that can self-host network monitoring and need graphing, availability checks, discovery, or distributed data collection.
14
Observium
WebLinuxAPI+1 Free plan Record4.6 Visit Community fits home labs, evaluation, and small non-critical deployments.
19
Progress Flowmon
WebLinuxAPI+1 — Record4.1 Visit Flowmon suits organizations that need traffic-based threat detection, network visibility, and performance troubleshooting.
Before you choose
Match the pricing model to your budget
Listings can show a free plan, a paid plan, freemium access or pricing on request. Check the paid-from figure and what the free plan includes before you commit.
A free plan can support an initial evaluation. A paid-from price gives a starting point, not a full quote for your network.
Choose a deployment that fits your stack
This category lists web, API, Linux, self-hosted, Windows and macOS platforms. Pick a model that fits your administration and hosting needs.
A self-hosted option puts deployment work in your environment. A web option can suit teams that prefer browser access.
Check the network views you need
Use SNMP monitoring for device metrics, automatic discovery for finding equipment, and flow analysis for traffic patterns. Compare the specific capabilities shown for a product.
Alert channels determine how warnings reach your team. Review the available channels alongside the conditions that trigger alerts.
Review device limits
The monitored device limit indicates the network size a plan is designed to cover. Compare that limit with your current estate and expected growth.
A higher limit may affect the paid tier you need. Confirm the limit and its pricing before selecting a plan.
Use trials and inspect the code model
The category offers free trials and free plans. A trial can help you assess setup and alert workflows before purchase.
Open-source code is offered by items on this list. If you need to read or modify it, review the licence and maintenance model.
Questions
Do these network monitoring tools offer free plans?
Yes. Free plans appear among the listed products, alongside freemium and paid pricing models.
Can I try a product before paying?
Yes. Listed products include free trials, with pricing notes showing terms such as 14 or 30 days.
Which platforms are covered?
The listed platform labels are web, API, Linux, self-hosted, Windows and macOS.
What network features can I compare?
You can compare SNMP monitoring, automatic discovery, flow analysis, alert channels, deployment and monitored device limits.
Are open-source options available?
Yes. Open-source code is offered by items on this list. Check the licence and project maintenance model before adoption.
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