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Fortinet FortiSIEM vs Graylog Security comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 18, 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

Fortinet FortiSIEM
Ranking in Security Information and Event Management (SIEM)
17th
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
75
Ranking in other categories
AI Observability (25th)
Graylog Security
Ranking in Security Information and Event Management (SIEM)
60th
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
2
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2026, in the Security Information and Event Management (SIEM) category, the mindshare of Fortinet FortiSIEM is 2.1%, down from 3.5% compared to the previous year. The mindshare of Graylog Security is 0.6%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Fortinet FortiSIEM2.1%
Graylog Security0.6%
Other97.3%
Security Information and Event Management (SIEM)
 

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.
Tony Zafiropoulos - PeerSpot reviewer
Owner/ Chief Engineer at Fixvirus.com
Aggregates logs in one place and helps to review data points
We tried Graylog Security, starting with their inexpensive open-source version. We tested it out and continued using it for a while. As for the main differences between Graylog Security and other vendors, some users might prefer cloud-based platforms over on-premises solutions. It isn't inherently cloud-native, but that might not matter much for some.

Quotes from Members

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

Pros

"The event correlation is pretty robust. The GUI is pretty good."
"We find the solution to be stable."
"To add workers and even collectors is pretty easy."
"Analytics. It can provide log information from the device. With log information, I can see if there is a threat"
"These aspects make Fortinet FortiSIEM a valuable choice."
"The most valuable feature is the anomaly-reporting alarms."
"The product is quite well-organized. The GUI makes it easy to navigate."
"We have many application systems, and I can set up Fortinet FortiSIEM for users to monitor their systems."
"We use the solution to collect logs."
"The tool aggregates logs. We can see the logs in one place."
 

Cons

"Fortinet FortiSIEM needs to provide better API integrations to users."
"Its training can be improved. Its price also needs to be improved."
"The patch management on the software needs to be better."
"The graphs on the user interface could be improved as we often experience glitches."
"The reporting feature is not very attractive for the upper management and I am not able to perform complex/nested queries."
"FortiSIEM is not a market leader in the SIEM space."
"FortiSIEM could be better integrated with other vendors."
"There could be more AI features included in the product."
"Graylog Security needs to incorporate security scorecards."
 

Pricing and Cost Advice

"The solution is available for both, perpetual and subscription licenses."
"Fortinet FortiSIEM is very cost-efficient compared to other SIEM solutions."
"Manageable, however would be better as pay as you go versus CapEX."
"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."
"The tool is really expensive. For what the tool does for our team, the price is fair."
"They have a yearly subscription."
"Pricing is determined based on the customer's budget."
"The price of Fortinet FortiSIEM is a lot less when compared to other solutions."
"I rate the tool's pricing a one out of ten."
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Top Industries

By visitors reading reviews
Outsourcing Company
11%
Comms Service Provider
10%
Financial Services Firm
9%
Construction Company
8%
Educational Organization
13%
Comms Service Provider
9%
Retailer
8%
Outsourcing Company
8%
 

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 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.
What is your primary use case for Fortinet FortiSIEM?
My main use case for Fortinet FortiSIEM is building a SOC and serving as an event management platform for correlating events in my work. I use Fortinet FortiSIEM for event correlation by building a...
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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.
Information Not Available
Find out what your peers are saying about Fortinet FortiSIEM vs. Graylog Security and other solutions. Updated: September 2026.
917,433 professionals have used our research since 2012.