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Fortinet FortiSIEM vs Opmantek NMIS comparison

 

Comparison Buyer's Guide

Executive Summary

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

Fortinet FortiSIEM
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
76
Ranking in other categories
Security Information and Event Management (SIEM) (7th), AI Observability (8th)
Opmantek NMIS
Average Rating
9.0
Number of Reviews
1
Ranking in other categories
Network Monitoring Software (107th)
 

Mindshare comparison

Fortinet FortiSIEM and Opmantek NMIS aren’t in the same category and serve different purposes. Fortinet FortiSIEM is designed for Security Information and Event Management (SIEM) and holds a mindshare of 2.7%, down 3.0% compared to last year.
Opmantek NMIS, on the other hand, focuses on Network Monitoring Software, holds 0.3% mindshare, up 0.2% since last year.
Security Information and Event Management (SIEM) Market Share Distribution
ProductMarket Share (%)
Fortinet FortiSIEM2.7%
Splunk Enterprise Security7.1%
Wazuh6.4%
Other83.8%
Security Information and Event Management (SIEM)
Network Monitoring Software Market Share Distribution
ProductMarket Share (%)
Opmantek NMIS0.3%
Zabbix5.7%
SolarWinds NPM3.4%
Other90.6%
Network Monitoring Software
 

Featured Reviews

SY
Network Engineer at Ogma Consulting
Comprehensive monitoring boosts security, yet incident management features need expansion
Fortinet FortiSIEM should broaden its remediation part to include more features for incident management. Currently, to manage repetitive incidents or for remediation, I need to use a separate software called FortiSOAR. Additionally, the search functionality in FortiAI should be improved to provide more precise results, making it easier for me to understand what actions need to be taken.
it_user855840 - PeerSpot reviewer
Systems Architect at a tech services company with 51-200 employees
Flexible device polling times and extensible modules are key features for me
There are lots of reasons why I'm using it. The installer itself is basically something that can be used as a no-questions-asked type of installer. I can use it with automation tools like Chef and Puppet. I don't have to answer some random questions. I can worry about all that stuff later on in the configuration. It allows for variable polling times of devices on the network. Because it's all in text, in general, that obviously makes it easier from the automation perspective as well, to modify configuration on the fly, using Puppet and those kind of tools. It does have different modules, so you can extend the solution as you need it, or get as little as you need in the beginning, so you don't have to buy a full set of modules. You just buy what you need and expand later on.

Quotes from Members

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

Pros

"The most valuable features of Fortinet FortiSIEM are the SD-WAN, Global LAN, and application controls."
"We have found the most important features in Fortinet FortiSIEM to be the correlation, file utility check, latest file, and hash changes. These features are important for us."
"FortiSIEM's log correlation is good."
"We have many application systems, and I can set up Fortinet FortiSIEM for users to monitor their systems."
"The advanced agents used to collect logs have been most valuable. We have also made use of the advanced intelligence this solution offers."
"The seamless integration with FortiGate is the solution's most valuable aspect."
"The solution’s IP database is awesome."
"FortiSIEM allows you to match IPs with threat intelligence feeds from sources like Kaspersky or Anomali, adding valuable context."
"The installer itself is basically something that can be used as a no-questions-asked type of installer. I can use it with automation tools like Chef and Puppet. I don't have to answer some random questions. I can worry about all that stuff later on in the configuration."
"In my case, I prefer to only poll interfaces that have descriptions, and the ones that don't have descriptions, I don't really want to know about them. It does allow for all these bits and pieces and adjustments, and fine tuning to get it to a point where it works for my needs."
"It allows for variable polling times of devices on the network. Because it's all in text, in general, that obviously makes it easier from the automation perspective as well, to modify configuration on the fly, using Puppet and those kind of tools."
"It does have different modules, so you can extend the solution as you need it, or get as little as you need in the beginning, so you don't have to buy a full set of modules. You just buy what you need and expand later on."
"The big thing is the event management engine, which is really, really nice to use, and it comes at a reasonable price, unlike some of the competitors like Netcool from IBM. Those kinds of tools are hugely expensive and they come as resource-heavy types of solutions. This obviously doesn't require as much hardware, but it does offer similar benefits where you can manage all the events."
 

Cons

"The biggest thing that could be better is a quicker response to support cases."
"An improvement would be if FortiSIEM's licensing was based on the number of nodes rather than the EPS."
"The tool's technical team's response time is too high, and they are not available even when they know that there are many pending issues."
"When our team tried configuring logs for Microsoft SQL, it did not work."
"Not very good on non-API features, lacks that functionality."
"Creating parsers to try make unknown events or currently unsupported devices produce meaningful information is extremely cumbersome."
"The product does not have Security Orchestration and Automation Response, I would recommend adding this feature."
"FortiSIEM could be better integrated with other vendors."
"These kinds of solutions are more node- or device-based solutions. It would be nice in the future if they could be more data-oriented, so it would be easier for me to pull different stats based on ad-hoc requirements; but in a big, centralized database where I can pull specific things, and mix and match the way I want to."
 

Pricing and Cost Advice

"Manageable, however would be better as pay as you go versus CapEX."
"Pricing is acceptable for more than 90% of our customers, as they normally get discounts."
"We pay for a license for FortiSIEM. We pay for the license and renewal."
"The tool is really expensive. For what the tool does for our team, the price is fair."
"This is probably more on the lower cost end of the spectrum compared to competing products. Fortinet's license model is based on events per second, which makes sense, but that's not typical. It makes it very hard to calculate what your costs are going to be as you scale the platform because some log sources, such as firewall logs, are very noisy, and there are lots and lots of events per second, but some of them are not. So, it becomes a bit of a science experiment trying to guess what your costs are going to be as you scale the solution. This is where other competing products perhaps have a more straightforward license model."
"Pricing is determined based on the customer's budget."
"Please be cheaper and more simplified."
"There is a need to make yearly payments towards the licensing charges attached to the product. The free version license of the product is available for two months."
Information not available
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Financial Services Firm
9%
Comms Service Provider
8%
Manufacturing Company
6%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business34
Midsize Enterprise22
Large Enterprise24
No data available
 

Questions from the Community

What do you like most about Fortinet FortiSIEM?
Fortinet FortiSIEM needs to provide better API integrations to users.
What is your experience regarding pricing and costs for Fortinet FortiSIEM?
My experience with pricing, setup cost, and licensing for Fortinet FortiSIEM is wonderful, as it offers an excellent license compared to other vendors.
What needs improvement with Fortinet FortiSIEM?
Fortinet FortiSIEM is great overall. Performance could be enhanced, but I do not wish to elaborate on needed improvements.
Ask a question
Earn 20 points
 

Also Known As

FortiSIEM, AccelOps
No data available
 

Overview

 

Sample Customers

FortiSIEM has hundreds of customers worldwide in markets including managed services, technology, financial services, healthcare, and government. Customers include Aruba Networks, Compushare, Port of San Diego, Cleveland Indians, Infoblox, Healthways, and Referentia.
Telmex, John Deere, Three Network.
Find out what your peers are saying about Splunk, Wazuh, IBM and others in Security Information and Event Management (SIEM). Updated: February 2026.
881,821 professionals have used our research since 2012.