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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
37th
Ranking in IT Infrastructure Monitoring
40th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
15
Ranking in other categories
IT Alerting and Incident Management (17th), Digital Experience Monitoring (DEM) (11th)
Nagios Core
Ranking in Network Monitoring Software
19th
Ranking in IT Infrastructure Monitoring
16th
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 August 2026, in the Network Monitoring Software category, the mindshare of FortiMonitor is 0.7%, down from 0.8% compared to the previous year. The mindshare of Nagios Core is 1.4%, down from 2.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Nagios Core1.4%
FortiMonitor0.7%
Other97.9%
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 really easy to use for monitoring the logs on FortiGate...It is a stable product."
"FortiMonitor is 100% stable."
"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."
"Fortinet's customer support is very good."
"The product's initial setup phase is easy."
"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."
"You should really try Nagios; it will help a lot and I have found that it is the best buddy for system admins."
"Nagios Core is a great solution for monitoring pretty much any size of deployment but you do need to know your way around a Linux system to set it up and run it."
"We have used this product now for quite some time and we are happy with it."
"We use the product to monitor server applications."
"Nagios Core is a great tool for monitoring the infrastructure including MSM queues, and when we use the agent, we can add other things as well."
"The most valuable features are the reports and the way it generates the report in a graphical manner."
"The application performance monitoring feature is valuable."
"Our customers like that Nagios Core is an open source solution. It can be customized to our customers' specific needs."
 

Cons

"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 are areas for improvement that FortiManager is addressing."
"FortiMonitor needs to improve its alert system."
"The tool's price in Vietnam is high, making it an area of concern where improvements can be made."
". Enhancements in the dashboard, such as clearer alerting, maintenance window management, software version tracking, and better visualization, would be beneficial."
"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."
"FortiMonitor's monitoring could be much better. It should be like, in Palo Alto."
"Sometimes, we get corruption when upgrading from firmware to the new generation, causing a lot of issues."
"Nagios Core does not have a graphic display."
"The core version is no match for the XI version."
"Cloud monitoring is an area for improvement because there aren't too many plugins available."
"This is the open source product, so it's a toolkit rather than a complete solution."
"I would like to see a much better Nagios Manager GUI that can support all type of configuration items, and advance search options."
"The initial setup process could be easier."
"They should simplify the features so it becomes easier to setup out of the box."
"When compared to earlier versions, it looks like 4.x has lost the statusmap.cgi module."
 

Pricing and Cost Advice

"The tool's pricing model in Vietnam is a bit high. I rate the product price as an eight out of ten."
"There are additional costs needed for certain functionality, such as scalability."
"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."
"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."
"FortiMonitor's price is very high."
"We have a large customer base for Fortinet, and the additional buying power got us really great discounts."
"We are using the free version."
"I would rate the solution's pricing an eight out of ten."
"Nagios Core is an open source solution, and there are no licensing fees."
"Nagios Core is free to use."
"We are using the open-source, unpaid version."
"The enterprise version has technical support. The version we are using is free."
"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."
"It's free."
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Top Industries

By visitors reading reviews
Manufacturing Company
8%
Construction Company
8%
Healthcare Company
8%
Financial Services Firm
8%
Comms Service Provider
10%
Manufacturing Company
9%
Financial Services Firm
8%
Construction 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: August 2026.
908,834 professionals have used our research since 2012.