No more typing reviews! Try our Samantha, our new voice AI agent.

Fortinet FortiSIEM vs Stellar Cyber Open XDR comparison

Why PeerSpot?
 

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
Ranking in Security Information and Event Management (SIEM)
11th
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
75
Ranking in other categories
AI Observability (14th)
Stellar Cyber Open XDR
Ranking in Security Information and Event Management (SIEM)
42nd
Average Rating
0.0
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
User Entity Behavior Analytics (UEBA) (29th), Endpoint Detection and Response (EDR) (55th), Network Traffic Analysis (NTA) (18th), Security Orchestration Automation and Response (SOAR) (25th), Network Detection and Response (NDR) (21st), Extended Detection and Response (XDR) (34th), Identity Threat Detection and Response (ITDR) (23rd)
 

Mindshare comparison

As of September 2026, in the Security Information and Event Management (SIEM) category, the mindshare of Fortinet FortiSIEM is 2.2%, down from 3.5% compared to the previous year. The mindshare of Stellar Cyber Open XDR is 1.2%, down from 1.5% 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%
Stellar Cyber Open XDR1.2%
Other96.6%
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.
JC
Global Director, Commercial Operations at Promasecure LLC
Automated security monitoring increases efficiency, but market visibility needs improvement
I am currently evaluating Stellar Cyber Open XDR in terms of their support. I do not see any major areas for improvement as of now. Their support is good, and the team is small, enabling them to cater to everyone effectively. While I have not encountered significant drawbacks so far, market penetration is challenging due to the product's newness, despite its flexibility and customization features. I find their user interface to be quite good.

Quotes from Members

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

Pros

"Analytics is the most valuable feature, and the business service summaries in the dashboards and the correlations for the SIEM are also valuable features."
"The most fascinating aspect of FortiSIEM is its integration with the MITRE ATT&CK framework."
"The Threat Hunting feature provides complete traffic analysis."
"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."
"Fortinet FortiSIEM is highly scalable. I would rate its scalability nine out of ten."
"The most valuable feature is the anomaly-reporting alarms."
"We're able to get real-timec as well as our customer networks that we're monitoring at all times."
"Some of our customers who use this solution have seen improvement in their connection with load balancing on both connections."
"Stellar Cyber Open XDR offers these functionalities at a more affordable price, making it easier for me to position it with price-sensitive customers."
"It can integrate with almost any cybersecurity tool available in the market."
 

Cons

"FortiSIEM needs to expand its integration with third-party vendors. I don't know if Forcepoint has been added, but there were limited resources for integrating Forcepoint solutions when we implemented FortiSIEM. It integrates well with other Fortinet products and solutions from established cybersecurity companies like Palo Alto but doesn't integrate with some of the newer vendors."
"Our customers are noticing configuration available in the GUI interface and I think that they should be equal."
"The backup and recovery process for this solution needs improvement. I would like to see a database with more structure in terms of maintenance and ease of use."
"Patching is not great - we're not getting the support we'd expect."
"The stability of the product is an area of concern where improvements are required."
"FortiSIEM could be better integrated with other vendors."
"Its training can be improved. Its price also needs to be improved."
"Areas for improvement would be the ease of use and the integration with Fortinet's own products."
"I would rate the stability at about five to six. The platform requires some fine-tuning, especially when integrating data sources and creating connectors."
"Support is an issue because they have a limited number of resources."
 

Pricing and Cost Advice

"The tool is really expensive. For what the tool does for our team, the price is fair."
"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."
"Please be cheaper and more simplified."
"We bought the perpetual license, so we own the product, but there is a three-year support renewal fee for that."
"The solution is available for both, perpetual and subscription licenses."
"Fortinet's products are not expensive, it is less than the competition."
"FortiSIEM's licensing is based on EPS, and its pricing is competitive in the market."
"The price is competitive."
"It’s a single license platform."
report
Use our free recommendation engine to learn which Security Information and Event Management (SIEM) solutions are best for your needs.
914,109 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Outsourcing Company
11%
Comms Service Provider
9%
Financial Services Firm
9%
Construction Company
8%
Manufacturing Company
14%
Comms Service Provider
10%
Outsourcing Company
9%
Financial Services Firm
7%
 

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...
What is your experience regarding pricing and costs for Stellar Cyber Open XDR?
Pricing is a major benefit of Stellar Cyber Open XDR. I rate it between three and four on the cost scale. It offers functionalities at a significantly lower cost than rival products, enabling me to...
What needs improvement with Stellar Cyber Open XDR?
I am currently evaluating Stellar Cyber Open XDR in terms of their support. I do not see any major areas for improvement as of now. Their support is good, and the team is small, enabling them to ca...
What is your primary use case for Stellar Cyber Open XDR?
I use Stellar Cyber Open XDR ( /products/stellar-cyber-open-xdr-reviews ) as a 24/7 security monitoring tool, especially for customers with large and medium networks. It eliminates the need for a d...
 

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.
Sumitomo Chemical USA, PlastiPak Packaging, University of Denver, Large California State Agency, Large Midwestern American City
Find out what your peers are saying about Fortinet FortiSIEM vs. Stellar Cyber Open XDR and other solutions. Updated: September 2026.
914,109 professionals have used our research since 2012.