NetXMS

Overview

NetXMS is an open-source platform for monitoring networks and infrastructure, suited to teams responsible for distributed sites, servers or industrial equipment. It brings discovery, topology maps and flexible access controls together, but Windows deployments need to plan around the 250-node limit without a valid license.

Teams can deploy NetXMS on premises or as a cloud platform. Its reach across network, application, server and industrial monitoring makes it more versatile than a single-purpose device monitor, while the range of deployment and access-control choices is most useful when a team has the capacity to configure a broader monitoring system.

Key features

Discovery and topology

Automated discovery builds layer 2 and IP topology and presents it as a network connectivity map. That helps teams understand how discovered infrastructure relates, rather than treating every device as an isolated alert source. Traffic monitoring, synthetic checks and custom sensors extend its scope beyond topology and availability.

Protocols and distributed sites

NetXMS supports SNMP, MQTT, EtherNet/IP, MODBUS-TCP, OPC UA and HTTP/REST, covering conventional network monitoring alongside industrial protocols. Proxy agents and zones support monitoring across distributed networks, including sites with unstable connections or overlapping IP ranges. These capabilities make it a credible fit for service providers and industrial environments, though teams with simpler needs may not benefit from that breadth.

Integrations, alerts and control

NetXMS integrates with Grafana out of the box and can send notifications through email, SMS, Telegram and Microsoft Teams; Slack is also an alert channel. Its Java API exposes actions available in the GUI for custom integrations and automation. Access rights can apply to all monitored devices, a group or individual devices, with distinctions such as read-only access versus alarm or command actions. The homepage also describes controls down to a specific metric and authenticated, encrypted communications, useful when responsibilities need to be separated.

Pricing

The free open-source monitoring solution costs nothing and can be downloaded and used without charge. The material limit is Windows server binaries: without a valid license, they are limited to 250 nodes. Teams evaluating Windows at larger scale should account for that cap before adopting it.

Paid support is sold separately, and support plans have custom pricing. Basic support is billed €3 800 per year and includes 10 cases per year, a two-business-day guaranteed response and the latest stable edition. It fits teams that can work within a modest case allowance and do not need faster response commitments.

Standard support is billed €580 per month or €6 500 per year. It includes unlimited cases, a one-business-day guaranteed response and stable versions released within the last 12 months. That is a stronger fit for teams needing ongoing support and a faster commitment. Premium support is billed €1 150 per month or €12 500 per year, with unlimited cases, a four-business-hour guaranteed response and stable versions released within the last 24 months. It suits environments where a faster response commitment matters. NetXMS Enterprise Edition is a customised offer for high-volume businesses and includes Standard support.

A free trial period can be requested by contacting sales. The available support tiers specify case limits and response commitments, so buyers should weigh those terms against the free edition rather than assuming a paid support plan changes the Windows node limit.

Platforms

NetXMS supports Windows, macOS, Linux, FreeBSD, Solaris, AIX, HP-UX and web access, with Android also among its listed platforms. Remote monitoring makes it relevant to infrastructure spread across systems and sites. The Windows server node cap is the notable qualification for larger deployments.

Who it's for

NetXMS is aimed at network and infrastructure teams, application and server operators, MSPs, ISPs and WISPs, ATM and payment-switch operators, and teams monitoring industrial equipment. Its distributed monitoring and protocol breadth are especially relevant when infrastructure spans locations or includes industrial systems. A small team seeking only straightforward host monitoring may prefer a narrower tool.

Pros and cons

Pros

• Automated layer 2 and IP discovery paired with topology maps helps teams inspect connectivity relationships.
• Proxy agents and zones address unstable links and overlapping IP ranges across distributed networks.
• Support for industrial protocols, custom sensors, synthetic checks and traffic monitoring serves varied infrastructure needs.
• Granular access rights and authenticated, encrypted communications support controlled operations.

Cons

• Windows server binaries stop at 250 nodes without a valid license, a material constraint for larger Windows deployments.
• Paid support uses custom pricing and separate case and response terms, so teams must choose a support tier to match their operational needs.
• The range of protocols, deployment options and controls is more than teams with basic monitoring needs may require.

Alternatives

Network Monitoring and Hardware Monitoring Software are useful category starting points. Consider Paessler PRTG Network Monitor if its free edition's limit of up to 100 sensors and about 10 devices better matches a small installation. Netdata is worth considering when its Community plan's cap of five active connected nodes and one active custom dashboard per room fits the intended scale.

ManageEngine OpManager may fit teams whose needs fit its free edition for three devices. Centreon is another option for readers comparing monitoring platforms. Checkmk may suit a team looking for a free Community edition with 2,000+ pre-built integrations and support for up to about 100 hosts. For system-focused monitoring, Glances is a free open-source option whose optional features require extra dependencies. Pokesensor offers core live monitoring features, while smartmontools is a free option providing the smartctl and smartd utilities.

Verdict

Choose NetXMS if you need broad network and infrastructure monitoring across distributed or industrial environments, with topology discovery and finely scoped access controls. Its free offering is a strong starting point, but larger Windows deployments should look elsewhere or resolve licensing before relying on it; teams needing support should compare the annual cost and response commitments of each tier with their operational needs.