Where Nagios is strong
- Long-established, with a very large ecosystem of plugins and community knowledge.
- Flexible plugin-based checks that can be written for almost anything.
- Nagios Core is open source, and Nagios XI is a commercial product.
Nagios is a long-established monitoring tool with a large plugin ecosystem. NetNMS is a simpler, ISP-focused alternative: a web UI with graphs, maps, OLT/ONU monitoring, BGP and NetFlow views and WhatsApp alerts in one small binary. Choose based on whether you want a plugin-based toolkit or a ready ISP-focused product.
Quick comparison
| Topic | NetNMS | Nagios |
|---|---|---|
| Installation and stack | One small binary (Go backend, React web UI). PostgreSQL for configuration and events, built-in time-series database for metrics. | Typically a core engine, a web interface and plugins that you choose and configure. |
| ISP features | OLT/ONU monitoring, BGP NOC view and NetFlow in one UI. | General-purpose checks. ISP-specific views usually mean plugins or add-ons. |
| Device templates | Ready JSON templates for Cisco, Huawei (including NE40E), Juniper EX, V-SOL, BDCOM, Grandstream and generic SNMP, matched automatically. | Plugins and community configurations for many devices. Check your exact devices. |
| Alert channels | WhatsApp gateway, Telegram, e-mail and webhook built in, with escalation and a delivery log. | Notifications run through configurable commands, so many channels are possible. |
| Product model | Single-vendor product made for ISPs by Anexg Tech. | Open-source Nagios Core and commercial Nagios XI. |
Information about other products is general and based on how they are typically used. Features change, so check each project's own documentation for current details.
Where NetNMS fits
- A simple install: one small binary for Linux or Windows.
- ISP views ready to use: OLT/ONU, BGP NOC and NetFlow.
- Alerts on WhatsApp, Telegram, e-mail and webhook without extra tools.
Choose Nagios if
you rely on its plugin ecosystem or existing Nagios configuration and want full control over every check.
Choose NetNMS if
you want graphs, maps, OLT/ONU, BGP and NetFlow views ready in one UI, without assembling plugins.
Common questions
Is NetNMS a Nagios alternative?
For ISP and network monitoring, yes: NetNMS aims to be a simpler, ready-to-use option. If you depend on custom Nagios plugins, check whether NetNMS covers the same checks.
Does NetNMS have a web UI with graphs and maps?
Yes. NetNMS is web-based, with dashboards, live traffic graphs, topology maps and reports.
Can I keep using Nagios next to NetNMS?
Many teams run more than one monitoring tool. You can evaluate NetNMS next to your current setup.
See NetNMS on your network
Tell us about your network and we will arrange a demo.