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ITSecureOps

IT Operations & Remote Support

Network Monitoring software

Tools that watch routers, switches, firewalls and links for availability, performance and capacity problems.

Vendors to know
10
Reviews
0
Comparisons
3
Guides and articles
7
Build a shortlistSee vendors

How to choose network monitoring software

Start with the incidents your team must explain. A device poller, flow analyzer and Internet path test answer different questions, so test the same devices, sites and failure scenarios before comparing license prices. The vendor list below is a market map; independent reviews remain unscored until verified.

Collection coverage

Which devices, interfaces, services and paths need polling or tests? Verify protocol support and credentials against your own inventory, including SNMP version and permissions.

Primary source →

Site architecture

Where must probes or collectors run, and what happens when a WAN link fails? Test one branch or client site instead of relying on a central-console screenshot.

Primary source →

Discovery and topology

Does discovery identify the physical or logical links you need, or only create monitored devices? Reconcile a pilot map against known switch ports and routes.

Primary source →

Cost and evidence

Count the vendor's actual billing unit and required retention, support and export options. Preserve enough historical data to compare an incident before retiring the existing tool.

Primary source →

These questions guide a product pilot. Vendor cards below are a market map, not a ranking; unreviewed products have no research score.

Network Monitoring vendors to know

Established leaders, challengers, newer entrants and the tools practitioners recommend to each other. Being listed is not a ranking or an endorsement, and no vendor paid to appear.

  • SolarWinds Network Performance Monitor

    Established leader

    Combines fault detection, performance monitoring, traffic analysis and configuration management with deep topology and NetPath analysis.

    Official site

  • Cisco ThousandEyes

    Established leader

    Internet and cloud path visibility platform that traces performance issues across networks an organization doesn't own, widely cited among enterprise leaders.

    Official site

  • PRTG Network Monitor

    Paessler

    Established leader

    Sensor-based monitoring combining infrastructure, network, application and website checks in one platform, available as SaaS or on-premises.

    Official site

  • Datadog Network Monitoring

    Established leader

    Network performance and device monitoring inside Datadog's observability platform; Datadog was named a Leader in the 2026 Gartner Magic Quadrant for Observability Platforms.

    Official site

  • ManageEngine OpManager

    ManageEngine (Zoho)

    Challenger

    Network fault and performance monitoring priced for mid-market IT teams, frequently shortlisted as a lower-cost alternative to PRTG.

    Official site

  • Auvik Network Management

    Auvik (Kaseya)

    Challenger

    Cloud-based network management with automated topology mapping and native multi-tenancy, the top choice for MSPs monitoring distributed client networks.

    Official site

  • LogicMonitor

    Challenger

    SaaS-based hybrid observability platform monitoring network, cloud and infrastructure together, positioned against ThousandEyes for enterprise path visibility.

    Official site

  • Nagios XI

    Nagios Enterprises

    Emerging

    Commercial edition of the long-running open-source Nagios Core monitoring engine, still a common starting point for smaller IT teams.

    Official site

  • Zabbix

    Community favourite

    Free, open-source monitoring platform with real-time alerting and visualization, commonly recommended as the top LibreNMS alternative by practitioners.

    Official site

  • LibreNMS

    Community favourite

    Auto-discovering, open-source network monitoring system forked from Observium, popular in homelab and SMB sysadmin communities for its low cost.

    Official site

Reviews for this category are in progress.

Research path

Start where you are in the buying process.

Step 1

Understand the category

Step 2

Evaluate your options

Step 3

Make the decision