Nagios alternatives

3 tools to consider instead of Nagios, shown against it.

Nagios Zabbix LibreNMS SolarWinds Network Performance Monitor
Vendor Nagios Enterprises Zabbix SIA LibreNMS community SolarWinds
Pricing model Free tier + paid plans Open source + paid options Open source + paid options Quote only
Free tier Yes Yes Yes No
Deployment Self-hosted Self-hosted, Cloud Self-hosted Self-hosted, Cloud
Open source Yes (GPL-2.0) Yes (AGPL-3.0) Yes (GPL-3.0) No
Best for IT teams wanting a proven, self-hosted monitoring engine, free at the core with a paid path to a web UI and reporting. Teams that want a free, unlimited, self-hosted monitoring platform with an optional paid support contract. Teams wanting a free, community-run monitoring platform with no vendor upsell path. IT infrastructure teams who need SNMP-based visibility into the health of owned network devices and links.
Pricing

Nagios Core is free and open source; Nagios XI is a perpetual license priced by monitored node count, with an Enterprise add-on tier.

XI Standard from $2,595
XI Enterprise from $4,690

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

The software is free and fully featured with no host/metric limits; paid tiers are optional support subscriptions, not feature gates.

Silver from €245/month
Gold from €660/month

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

Entirely free and open source; no official paid edition. Commercial support is available only through independent partners.

Pricing has not been verified yet — see the vendor's site.

Licensed by number of monitored elements/nodes; no public price list, quote requested through SolarWinds sales.

Checked on the vendor's own page on September 21, 2026: no prices are published. Expect to be quoted.

Features
  • Host and service availability checks
  • Large open-source and commercial plugin ecosystem
  • Web-based configuration and auto-discovery (XI)
  • Performance graphing and dashboards (XI)
  • SLA and capacity planning reports (XI Enterprise)
  • REST API (XI)
  • Multi-tenancy and SSO (XI Enterprise)
  • SNMP, agent-based and API-based monitoring
  • Unlimited hosts, metrics, users and alerts
  • Auto-discovery and low-level discovery rules
  • Customizable dashboards and triggers
  • Distributed monitoring with proxies
  • Built-in anomaly detection and trend prediction
  • Web-based configuration and templates
  • SNMP/LLDP/CDP auto-discovery
  • Interface, CPU, memory and sensor graphing
  • Alerting with customizable rules
  • Distributed polling for large environments
  • REST API
  • Billing/traffic accounting module
  • Plugin and integration ecosystem
  • SNMP-based device and interface monitoring
  • Automated network topology mapping
  • NetPath hybrid IT path visualization
  • Customizable performance dashboards and alerts
  • Wireless heat maps
  • Capacity forecasting
  • Integration with the wider Orion platform modules

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