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FortiMonitor vs Nagios Core comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 9, 2024

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

FortiMonitor
Ranking in Network Monitoring Software
20th
Ranking in IT Infrastructure Monitoring
21st
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
15
Ranking in other categories
IT Alerting and Incident Management (13th), Digital Experience Monitoring (DEM) (8th)
Nagios Core
Ranking in Network Monitoring Software
11th
Ranking in IT Infrastructure Monitoring
11th
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
51
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2026, in the Network Monitoring Software category, the mindshare of FortiMonitor is 0.7%, down from 0.7% compared to the previous year. The mindshare of Nagios Core is 1.5%, down from 2.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Nagios Core1.5%
FortiMonitor0.7%
Other97.8%
Network Monitoring Software
 

Featured Reviews

reviewer2677554 - PeerSpot reviewer
Network Engineer III at a energy/utilities company with 1,001-5,000 employees
Managing diverse networks with detailed alerts enhances device oversight
FortiManager is very helpful in managing our networks. We use it to manage 20 farms and various networks with hundreds of devices. The version we are using provides more detail than the older dashboard. We appreciate the alerting capabilities, which are integrated with SolarWinds to notify our team via SMS.
HY
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.

Quotes from Members

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

Pros

"FortiMonitor is 100% stable."
"The most valuable feature of FortiMonitor is the overall ability to monitor the health of the environment."
"With FortiMonitor, you can get all the logs of the traffic information of the destination or the source."
"FortiMonitor is really easy to use for monitoring the logs on FortiGate...It is a stable product."
"Overall, I would recommend FortiMonitor to others."
"The most valuable feature of FortiMonitor is user monitoring, as we are able to see if the user is following the policy or not from their system, and additionally the solution integrates well with Fortinet FortiGate and has centralized management."
"The solution helps to see client infrastructure. It has many boxes and blinks green or red when the station goes up or down. We have different domains for the device groups that we monitor."
"The product's initial setup phase is easy."
"What I like about Nagios Core is that it helps me ensure everything is running smoothly by checking the status of hosts and services."
"The reporting structure and the feature set are valuable to me."
"Using Nagios, I'm managing more than 1000 services, which involves the following operating nodes: IBM AIX, Red Hat Enterprise Linux, HP-Unix, Windows enterprise-grade OS, Cisco router/switches, FortiGate and WatchGuard firewalls, APC UPS systems, and many more."
"The application performance monitoring feature is valuable, and we primarily use it for user experience monitoring and determining which layer the problem happened to resolve it."
"I like that it's very simple to install, easy to manage and deploy, and easy to use for monitoring."
"Before we implemented Nagios, we did not know which servers were up or down until a customer told us, and now I can see trends over time and it gives me perspective of what needs to be improved so we are able to work proactively as opposed to reactively."
"We've got a medium size distributed system with a lot of locally installed machines, and Nagios provides us with a solid and reliable monitoring solution for these machines."
"Nagios Core integrates with tools like Splunk, Datadog, or Dynatrace. It is usually used as a feed to provide more technical information about devices or hosts to another system."
 

Cons

"Sometimes, during high CPU usage, we cannot access FortiMonitor and must refresh it."
"I think the current features are really good for me, nothing else comes to mind right now. Maybe some small improvements could be made in the customization and configuration part of the UI to make it easier or more intuitive. Customizable UI options, like we saw in the demo, could be helpful for everyone. But in our operational environment, having clear health status and system details is crucial for us system engineers. One feature I'd really like to see is a credential management system. It would help us keep track of who's logged in and how many times, which is important due to user restrictions. Sometimes, we need to manage logins more efficiently, like logging off other users to free up credentials. So having a feature like that would be really helpful."
"There is room for improvement in the FortiMonitor report. It is not ideal for showcasing to tech customers or managers, especially when trying to display high CPU usage from logins within a specific range of months or the most recent month."
"Sometimes, we get corruption when upgrading from firmware to the new generation, causing a lot of issues."
"FortiMonitor could improve by having compatibility with other operating systems, such as Linux."
". Enhancements in the dashboard, such as clearer alerting, maintenance window management, software version tracking, and better visualization, would be beneficial."
"FortiMonitor's monitoring could be much better. It should be like, in Palo Alto."
"The solution's initial setup process is time-consuming."
"I like to have the option to configure Nagios using the web interface."
"The core version is no match for the XI version."
"The tool needs to improve the integrations."
"We're using the free version, which limits us in terms of the things that we can do. If we had the paid version, a lot of our issues would probably go away. For example, we can't isolate instances that are being built or updated with the production ones. When they're being built, on Nagios, they're showing in red. It'd be nice to be able to partition those off until they're all green, and then we can bring them into the environment. This is probably because we've got the free version and not the paid version. If we went for the paid version, it would probably allow us to do exactly what we want to or remove the restrictions that we have, but if we are able to isolate instances in the free version, it would make life much easier."
"The mapping is a little hard."
"Setup is bit complicated due to the large set of libraries it needs, but this may be because it's open source."
"We're using the free version, which limits us in terms of the things that we can do."
"Nagios' great customizability is also one of its greatest drawback."
 

Pricing and Cost Advice

"There are additional costs needed for certain functionality, such as scalability."
"The tool's pricing model in Vietnam is a bit high. I rate the product price as an eight out of ten."
"FortiMonitor's price is very high."
"On a scale from one to ten, I rate the pricing a nine since it is a good solution that is available at a cheap price."
"The price of FortiMonitor is approximately $200 annually for 225 users. The price is competitive."
"In terms of licensing, while it may not be the most expensive option on the market, it's relatively cost-effective. You can obtain licenses at a lower cost, with the calculation being straightforward. For example, if you onboard around 5,000 devices, you'll need approximately 5,000 licenses, as each device typically counts as one license."
"Compared to other solutions, FortiMonitor is a very expensive solution."
"We have a large customer base for Fortinet, and the additional buying power got us really great discounts."
"We are using the open-source, unpaid version."
"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."
"The solution is expensive."
"The enterprise version has technical support. The version we are using is free."
"It's free."
"Nagios Core is free to use."
"Lessening the price point would be an improvement."
"The product is cheaply priced."
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Top Industries

By visitors reading reviews
Healthcare Company
8%
Construction Company
8%
Manufacturing Company
8%
Financial Services Firm
8%
Manufacturing Company
10%
Comms Service Provider
9%
Financial Services Firm
8%
Computer Software Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise2
Large Enterprise6
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise11
Large Enterprise24
 

Questions from the Community

What is the best network monitoring software for large enterprises?
I have a clear bias because I work for Panopta. We aren't a fit for everyone, but I can confirm that Panopta is a lot less work to stand up and maintain. It's also a lot easier to use and onboard n...
What is your experience regarding pricing and costs for FortiMonitor?
FortiMonitor does save time but not significantly on costs, as there are still expenses related to procurement, installation, and licensing.
What needs improvement with FortiMonitor?
There are areas for improvement that FortiManager is addressing. We have not yet upgraded to the latest software versions, being a full revision behind, but we plan to update soon since the current...
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.
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.
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...
 

Comparisons

 

Also Known As

Panopta
No data available
 

Overview

 

Sample Customers

SONY, GoDaddy, HCL, ING, ARMOR, billboard
Airbnb, Cisco, PayPal, FanDuel
Find out what your peers are saying about FortiMonitor vs. Nagios Core and other solutions. Updated: June 2026.
900,747 professionals have used our research since 2012.