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LibreNMS

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Automated network discovery, monitoring, and alerting for your entire infrastructure.

Free, no paid tier
Free Monitoring DevOps Cloud & Infrastructure
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Reviews on G2
14 reviews tracked

The Bottom Line

Price
Free, no paid tier. Compare plans

Key facts

  • Automatically discovers and monitors network devices.
  • Provides flexible alerting and extensive device support.
  • Offers a billing system and scales with distributed polling.

Pros

  • Open-source and free to use
  • Comprehensive automatic network discovery
  • Highly flexible and customizable alerting
  • Scalable architecture with distributed polling
  • Strong community support and active development

Cons

  • Requires self-hosting and technical expertise for setup and maintenance
  • No official commercial support plans mentioned (community-driven)
  • Mobile app mentioned by a third-party, not directly by LibreNMS

What is LibreNMS?

LibreNMS is an open-source network monitoring system that automatically discovers and monitors your entire network infrastructure. It provides extensive device support and integrates with various network protocols like CDP, FDP, LLDP, OSPF, BGP, SNMP, and ARP for comprehensive network visibility. The platform offers a highly flexible alerting system that can notify users via email, IRC, Slack, and other channels, ensuring timely responses to network issues. Designed for network administrators, IT professionals, and organizations of all sizes, LibreNMS helps maintain network health, optimize performance, and manage bandwidth. Its features include a billing system for port usage, automatic updates for continuous improvement, and distributed polling for horizontal scaling. With a mobile-friendly web UI and multiple authentication methods, LibreNMS provides a robust and accessible solution for managing complex networks.

Available on: Web, iOS, Android

Data compiled by Toolradar How we evaluate
Source librenms.org

Ratings Across the Web

4.7 (14 reviews)

LibreNMS holds an aggregate rating of 4.7 out of 5 from 14 reviews across G2, last checked March 19, 2026.

G2 14 reviews
4.7/5

Ratings aggregated from independent review platforms. Learn more

Key Features

  • Automatic network discovery (CDP, FDP, LLDP, OSPF, BGP, SNMP, ARP)
  • Customizable alerting system (email, IRC, Slack)
  • Full API access for management, graphing, and data retrieval
  • Billing system for bandwidth usage on network ports
  • Automatic updates for bug fixes and new features
  • Distributed polling for horizontal scaling
  • Extensive device support
  • Mobile-friendly Web UI

Pricing

Free

LibreNMS is completely free to use with no hidden costs.

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LibreNMS by the numbers

LibreNMS compared with 220 Monitoring tools on Toolradar, as of Nov 2026
Metric LibreNMS Peer median Position (1 is best)
Free plan Yes 65% have one n/a
Listed as an alternative to 2 tools 2 #102 of 220 (joint)
Integrations listed 2 2 #16 of 52 (joint) tools with at least one integration recorded

Listed as an alternative to: #97 on 2026-10-16 to #102 on 2026-11-02 (rank among 220 tools, 1 is best).

Each position is counted among the tools that have data for that row, as noted under it. All Monitoring data · How we compute this. Advertising and placement fees are not inputs to any position.

Cite this: Toolradar, “LibreNMS by the numbers”, Nov 2026.

Reviews

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4.7/5

Across 14 verified user reviews on G2

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

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LibreNMS FAQ

How does LibreNMS assist with network management and optimization?

LibreNMS automatically discovers and monitors an entire network infrastructure, helping maintain network health, optimize performance, and manage bandwidth. It integrates with various network protocols like CDP, FDP, LLDP, OSPF, BGP, SNMP, and ARP for comprehensive visibility.

Which teams benefit most from using LibreNMS?

LibreNMS is designed for network administrators, IT professionals, and organizations of all sizes who need to monitor and manage complex networks. Its features support maintaining network health and optimizing performance across the infrastructure.

How does LibreNMS compare to Prometheus for network monitoring?

LibreNMS offers comprehensive automatic network discovery and a highly flexible alerting system, while Prometheus is known for its powerful time-series data model and querying language. LibreNMS also provides a billing system for port usage, which is not a core feature of Prometheus.

What kind of limitations should users consider before adopting LibreNMS?

Users should be aware that LibreNMS requires self-hosting and technical expertise for setup and ongoing maintenance. Additionally, there are no official commercial support plans, meaning users rely on community-driven support.

How is LibreNMS priced?

LibreNMS is open-source and free to use, meaning there are no licensing costs or paid plans required to access its features. This makes it a cost-effective solution for network monitoring.

Can LibreNMS scale to monitor large and distributed networks?

Yes, LibreNMS is designed with a scalable architecture that includes distributed polling, allowing it to monitor large and distributed networks effectively. This feature enables horizontal scaling to handle increased monitoring demands.

What authentication methods does LibreNMS support for user access?

LibreNMS provides multiple authentication methods to secure user access to the monitoring platform. This ensures that organizations can integrate it with their existing security policies.

Source: librenms.org

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