Nagios Core vs NetFort LANGuardian comparison

Nagios and Rapid7 are both solutions in the Network Monitoring Software category. Nagios is ranked #10 with an average rating of 8.7, while Rapid7 is ranked #93. Nagios holds a 1.9% mindshare in NMS, compared to Rapid7’s 0.4% mindshare. Additionally, 80% of Nagios users are willing to recommend the solution, compared to 100% of Rapid7 users who would recommend it.

Nagios Core

Read 51 Nagios Core reviews

4,463 Views
3,749 Comparison Views

80% willing to recommend

NetFort LANGuardian

Read 2 NetFort LANGuardian reviews

585 Views
497 Comparison Views

100% willing to recommend

Nagios Core

NetFort LANGuardian

Comparison Buyer's Guide

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Executive SummaryUpdated on Oct 10, 2024

NetFort LANGuardian and Nagios Core compete in network monitoring and management. NetFort LANGuardian has the upper hand in user-friendly interface and insights, while Nagios Core stands out for flexibility and extensive features.

Features: NetFort LANGuardian provides deep visibility into network traffic, user and application identification, and comprehensive traffic analysis. Nagios Core offers customizable alerts, extensive plugin support, and robust network monitoring features.

Room for Improvement: NetFort LANGuardian could enhance its plugin support, lower its upfront cost, and simplify traffic analysis further. Nagios Core could improve by providing simpler installation, more intuitive configuration, and enhanced user interface for non-technical users.

Ease of Deployment and Customer Service: NetFort LANGuardian features a straightforward installation with dedicated support, reducing setup complexity. Nagios Core requires a more manual setup process but offers extensive community support resources.

Pricing and ROI: NetFort LANGuardian's pricing involves a higher upfront investment but generates fast ROI with detailed insights. Nagios Core, being open source, has lower initial costs, offering long-term value for those willing to invest in setup.

To learn more, read our detailed Nagios Core vs. NetFort LANGuardian Report (Updated: December 2025).

Buyer's Guide

Nagios Core vs. NetFort LANGuardian

December 2025

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Helped 881,176 peers since 2012

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Categories and Ranking

Nagios Core

Ranking in Network Monitoring Software

10th

Average Rating

8.2

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

IT Infrastructure Monitoring (11th)

NetFort LANGuardian

Ranking in Network Monitoring Software

93rd

Average Rating

10.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of January 2026, in the Network Monitoring Software category, the mindshare of Nagios Core is 1.9%, down from 3.0% compared to the previous year. The mindshare of NetFort LANGuardian is 0.4%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Network Monitoring Software Market Share Distribution
Product	Market Share (%)
Nagios Core	1.9%
NetFort LANGuardian	0.4%
Other	97.7%

Network Monitoring Software

Featured Reviews

Husham Yaqoob

Senior System Administrator at Interactive Group

Monitoring solution provides comprehensive visibility across IT infrastructure

The good thing about Nagios Core is it covers everything. Everything in the IT domain, you can monitor anything. You can even monitor printers, the ports of printers, Core workstations, and storage. You can monitor the workflow Core and the utilization of computes. If you want to grasp everything of your IT equipment on a single interface, you can use Nagios. It's the best one. It provides dashboards, and you can also configure your emails and alerts with it. If something is critical, you can configure it to notify via emails. It has a very handy dashboard, providing live alerts and visibility for everything.

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it_user172854

Research Special Projects Lead at a university with 501-1,000 employees

Cost effective but when we originally purchased LANGuardian, some features needed further development.

The ability to detect and decipher torrent traffic for the purpose of identifying what some refer to as "copyright violators" Our CIO asked us to track down the source of undesired uploads, which trigger e-mails received by outside bodies regarding what they refer to as "copyright violations",…

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Top Industries

By visitors reading reviews

Computer Software Company

11%

Manufacturing Company

10%

Comms Service Provider

Government

Comms Service Provider

11%

Financial Services Firm

11%

Healthcare Company

Computer Software Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	20
Midsize Enterprise	11
Large Enterprise	22

No data available

Questions from the Community

What is your experience regarding pricing and costs for Nagios Core?

Nagios Core is a free and open-source product. We don't charge for the product itself, but we charge for the man-hour costs related to installation, configuration, ongoing operation, and maintenance.

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What needs improvement with Nagios Core?

The dashboard should be improved. It's very simple. I don't have a very clear or specific suggestion. You can change the skin of the dashboard, however, it's good for me.

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What is your primary use case for Nagios Core?

I was a senior system administrator. I've been using Nagios Core for more than ten years now. It can be used to monitor hosts, such as machines, and monitor services of any kind. I'm using it to mo...

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Comparisons

Icinga vs Nagios Core

Compared 11% of the time

Zabbix vs Nagios Core

Compared 7% of the time

Nagios XI vs Nagios Core

Compared 7% of the time

LibreNMS vs Nagios Core

Compared 6% of the time

Centreon vs Nagios Core

Compared 5% of the time

More Nagios Core Competitors

TruView vs NetFort LANGuardian

Compared 52% of the time

PRTG Network Monitor vs NetFort LANGuardian

Compared 48% of the time

More NetFort LANGuardian Competitors

Product Reports

Buyer's Guide

Nagios Core

January 2026

Download Nagios Core product report

Buyer's Guide

Network Monitoring Software

January 2026

Download NetFort LANGuardian product report

Also Known As

No data available

LANGuardian

Overview

This is IT infrastructure monitoring's industry-standard, open-source core. Free without professional support services.

Nagios

NetFort LANGuardian is deep packet inspection software for investigating, monitoring, and reporting on network and user activity. It is a passive network traffic analyzer, not inline and cannot have an impact on network performance. Gain layer 7 visibility without the need for expensive appliances.

Rapid7

Sample Customers

Airbnb, Cisco, PayPal, FanDuel

City of Armadale, NCG Group, King Faisal Hospital

Buyer's Guide

Nagios Core vs. NetFort LANGuardian

December 2025

Free Report: Nagios Core vs. NetFort LANGuardian

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