FortiMonitor vs Nagios Core comparison

Fortinet and Nagios are both solutions in the Network Monitoring Software category. Fortinet is ranked #21 with an average rating of 8.7, while Nagios is ranked #12 with an average rating of 8.3. Fortinet holds a 0.8% mindshare in NMS, compared to Nagios’s 2.5% mindshare. Additionally, 100% of Fortinet users are willing to recommend the solution, compared to 80% of Nagios users who would recommend it.

FortiMonitor

Read 15 FortiMonitor reviews

1,548 Views
1,238 Comparison Views

100% willing to recommend

Nagios Core

Read 51 Nagios Core reviews

3,994 Views
3,475 Comparison Views

80% willing to recommend

FortiMonitor

Nagios Core

Comparison Buyer's Guide

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Executive SummaryUpdated on Oct 9, 2024

Nagios Core and FortiMonitor are competitors in network monitoring. FortiMonitor seems to have the advantage due to its advanced feature set.

Features: Nagios Core offers open-source versatility, extensive plugin support, and alerting mechanisms. FortiMonitor provides cloud-based monitoring, automated remediation, and flexible scaling options.

Room for Improvement: Nagios Core could improve user interface, automated management, and scaling capabilities. FortiMonitor may focus on enhancing customization, integration options, and reducing dependence on a cloud-only model.

Ease of Deployment and Customer Service: Nagios Core requires significant setup time and technical knowledge. FortiMonitor supports a straightforward deployment with comprehensive technical support.

Pricing and ROI: Nagios Core's low initial costs are offset by infrastructure and maintenance expenses. FortiMonitor uses a subscription model offering higher ROI through reduced downtime.

To learn more, read our detailed FortiMonitor vs. Nagios Core Report (Updated: September 2025).

Buyer's Guide

FortiMonitor vs. Nagios Core

September 2025

Download the complete report

Helped 871,688 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

FortiMonitor

Ranking in Network Monitoring Software

21st

Ranking in IT Infrastructure Monitoring

22nd

Average Rating

8.4

Reviews Sentiment

7.1

Number of Reviews

Ranking in other categories

IT Alerting and Incident Management (9th), Digital Experience Monitoring (DEM) (7th)

Nagios Core

Ranking in Network Monitoring Software

12th

Ranking in IT Infrastructure Monitoring

11th

Average Rating

8.2

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of October 2025, in the Network Monitoring Software category, the mindshare of FortiMonitor is 0.8%, up from 0.7% compared to the previous year. The mindshare of Nagios Core is 2.5%, down from 3.2% 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	2.5%
FortiMonitor	0.8%
Other	96.7%

Network Monitoring Software

Featured Reviews

JaimeVasquez

Commercial Manager at IT-Experience

Monitoring capabilities keep operations running smoothly and alerts enhance proactive system management

We use FortiMonitor to monitor the infrastructure of our customers. We check on what is happening with their operations, monitor bandwidth, ensure configurations are appropriate for the customer, and identify if anything is going wrong The most valuable features of FortiMonitor are its redundancy…

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Nishith-Vyas

Tech Lead at STL Digital Limited

Valuable reporting and alert system with room for PDF export improvements

The NetEase reporting structure needs improvement, especially the availability report, which is weak. It should be generated automatically with minimal human intervention and should be exportable as a PDF. Besides that, an integrated PDF export feature for reports is necessary. Also, the alert mechanism and graphing mechanism need to be integrated properly into Nagios Core. Currently, integrating these requires advanced Linux knowledge. Integration of more visualization tools like Grafana and Prometheus for better graphing and visualization is also recommended.

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Quotes from Members

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

Pros

"FortiMonitor is really easy to use for monitoring the logs on FortiGate...It is a stable product."

"FortiMonitor has a very intuitive dashboard, which makes it particularly helpful for analyzing traffic, alerts, and other information."

"FortiMonitor offers comprehensive monitoring capabilities, allowing me to track network traffic in and out effectively."

"FortiMonitor has a very intuitive dashboard, which makes it particularly helpful for analyzing traffic, alerts, and other information."

"The most valuable feature of FortiMonitor is user monitoring. We are able to see if the user is following the policy or not from their system. Additionally, the solution integrates well with Fortinet FortiGate and has centralized management."

"It provides the best firewall features."

"The most valuable feature of this solution is what the devices are used for. We have big backups for our Cradlepoint solutions, but FortiMonitor is a great routing device and we love working with them."

"FortiMonitor is 100% stable."

More FortiMonitor pros

"Nagios Core is very configurable. Whatever you want, you can do it."

"The solution is quite efficient."

"Nagios Core is stable."

"The most valuable feature of Nagios Core is it allows us to develop and add as many plugins as we want."

"I like the way the solution sends alerts and how it keeps on escalating them."

"Key features include the GUI interface, its notification capabilities, and the real-time reporting."

"Monitoring with Nagios Core is helpful because it provides immediate alerts if something goes down, such as a server, or wireless router, or if there's a cable break. This allows us to respond promptly to any issues."

"Provides timely notifications."

More Nagios Core pros

Cons

"We use FortiToken, and it's a pain to use because you have to send things through your phone and then confirm by email. Only after this can you log in. It's dual-factor authentication. I wish that I could just log in or bring up a dashboard where I could log in from."

"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."

"FortiMonitor could be improved by making it more convenient for smaller workloads, such as when configuring a few branches."

"Sometimes, during high CPU usage, we cannot access FortiMonitor and must refresh it."

"FortiMonitor could improve by having compatibility with other operating systems, such as Linux."

"Sometimes, we get corruption when upgrading from firmware to the new generation, causing a lot of issues."

"The tool's price in Vietnam is high, making it an area of concern where improvements can be made."

"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."

More FortiMonitor cons

"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 dashboard should be improved."

"The mapping is a little hard."

"Making it a little easier to configure and set up from the start would help. There are multiple layers that you have to wade through to be able to set it up, to do it the right way, and to get it to do what you want it to do."

"I would like to see a sensor that shows the traffic of a user and what they're doing on the network."

"There is room for improvement in the graphics."

"It would be nice if the company offered a sales or contract manager that was dedicated to our company so that we would have some sort of link to Nagios, and if we had issues or questions, we'd be able to contact them directly."

"The UI is a little outdated and graphics could be displayed in a better way."

More Nagios Core cons

Pricing and Cost Advice

"Compared to other solutions, FortiMonitor is a very expensive solution."

"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."

"We have a large customer base for Fortinet, and the additional buying power got us really great discounts."

"There are additional costs needed for certain functionality, such as scalability."

"The price of FortiMonitor is approximately $200 annually for 225 users. The price is competitive."

"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 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."

"It's free."

"Nagios Core is free to use."

"We are using the free version."

"The product is cheaply priced."

"I would rate the solution's pricing an eight out of ten."

"Lessening the price point would be an improvement."

"Nagios Core is an open source solution, and there are no licensing fees."

"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."

More Nagios Core pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

26%

Manufacturing Company

Healthcare Company

Financial Services Firm

Computer Software Company

14%

Manufacturing Company

Comms Service Provider

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	8
Midsize Enterprise	2
Large Enterprise	6

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

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...

See all answers

What do you like most about FortiMonitor?

In FortiMonitor, we're linked up with our Netgear, CactusServer, and NOC. It's really valuable because everything's migrating to one dashboard for us system engineers. We can keep an eye on traffic...

See all answers

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.

See all answers

What do you like most about Nagios Core?

What I like about Nagios Core is that it helps me ensure everything is running smoothly by checking the status of hosts and services.

See all answers

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.

See all answers

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.

See all answers

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Compared 13% of the time

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Compared 11% of the time

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Compared 20% of the time

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Compared 14% of the time

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Compared 12% of the time

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Compared 7% of the time

Checkmk vs Nagios Core

Compared 6% of the time

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Product Reports

Buyer's Guide

Digital Experience Monitoring (DEM)

October 2025

Download FortiMonitor product report

Buyer's Guide

Nagios Core

October 2025

Download Nagios Core product report

Also Known As

Panopta

No data available

Overview

FortiMonitor is a comprehensive, SaaS-based digital experience monitoring (DEM) platform that helps organizations modernize their performance-monitoring tools. It provides visibility into endpoint application performance and digital experience—no matter where the user resides or where the application is hosted.

Fortinet

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

Nagios

Sample Customers

SONY, GoDaddy, HCL, ING, ARMOR, billboard

Airbnb, Cisco, PayPal, FanDuel

Buyer's Guide

FortiMonitor vs. Nagios Core

September 2025

Free Report: FortiMonitor vs. Nagios Core

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