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Fortinet FortiSIEM vs Graylog Security comparison

 

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)
13th
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
75
Ranking in other categories
AI Observability (15th)
Graylog Security
Ranking in Security Information and Event Management (SIEM)
61st
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 August 2026, in the Security Information and Event Management (SIEM) category, the mindshare of Fortinet FortiSIEM is 2.2%, down from 3.3% compared to the previous year. The mindshare of Graylog Security is 0.5%, up from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Fortinet FortiSIEM2.2%
Graylog Security0.5%
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 most valuable feature is the anomaly-reporting alarms."
"The solution’s IP database is awesome."
"The product is quite well-organized. The GUI makes it easy to navigate."
"FortiSIEM gives us a lot of valuable events and details by using a unified event-based framework to analyze all data including logs, performance monitoring data and provides a broad range of metrics."
"The pricing is very, very affordable; for the value you get, I think it’s about the cheapest solution on the market."
"The primary valuable feature is that it has replaced a whole lot of other products with one platform."
"FortiSIEM helped us discover all the threats at the time that were attacking the IT services of the company. We now have multiple-level authentication."
"The most valuable feature is the ability to view all the network events on a single pane and find the point of contact or point of the incident."
"We use the solution to collect logs."
"The tool aggregates logs. We can see the logs in one place."
 

Cons

"The initial setup with Fortinet FortiSIEM Accelops was not easy. We had faced a few problems, but I think Fortinet should give more training courses for their resellers."
"Issues that could have been resolved in 30-60 minutes sometimes took months, but they have improved."
"The performance can be improved. Sometimes it takes a long time to fetch data."
"The reporting feature is not very attractive for the upper management and I am not able to perform complex/nested queries."
"Fortinet FortiSIEM needs to provide better API integrations to users."
"FortiSIEM could be better integrated with other vendors."
"The challenge I face with Fortinet FortiSIEM is the lack of support."
"The patch management on the software needs to be better."
"Graylog Security needs to incorporate security scorecards."
 

Pricing and Cost Advice

"We pay for a license for FortiSIEM. We pay for the license and renewal."
"Its price can be better. We are Fortinet partners, so we can get discounts, but its price can be an issue at the beginning for others. There is a licensing scheme for every case. There are three licensing schemes that we can choose from."
"FortiSIEM's licensing is based on EPS, and its pricing is competitive in the market."
"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."
"Manageable, however would be better as pay as you go versus CapEX."
"We bought the perpetual license, so we own the product, but there is a three-year support renewal fee for that."
"Fortinet FortiSIEM is not an expensive solution."
"Fortinet FortiSIEM is very cost-efficient compared to other SIEM solutions."
"I rate the tool's pricing a one out of ten."
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Top Industries

By visitors reading reviews
Comms Service Provider
10%
Financial Services Firm
9%
Construction Company
9%
Outsourcing Company
8%
Educational Organization
13%
Comms Service Provider
10%
Retailer
8%
Construction Company
6%
 

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: August 2026.
909,948 professionals have used our research since 2012.