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Fortinet FortiSIEM vs Stellar Cyber Open XDR 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
Ranking in Security Information and Event Management (SIEM)
7th
Average Rating
7.6
Reviews Sentiment
6.5
Number of Reviews
74
Ranking in other categories
No ranking in other categories
Stellar Cyber Open XDR
Ranking in Security Information and Event Management (SIEM)
51st
Average Rating
0.0
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
Endpoint Detection and Response (EDR) (59th), Security Orchestration Automation and Response (SOAR) (26th), Network Detection and Response (NDR) (22nd), Extended Detection and Response (XDR) (36th)
 

Mindshare comparison

As of June 2025, in the Security Information and Event Management (SIEM) category, the mindshare of Fortinet FortiSIEM is 3.3%, up from 3.0% compared to the previous year. The mindshare of Stellar Cyber Open XDR is 1.2%, up from 0.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM)
 

Featured Reviews

Oliver Jackson - PeerSpot reviewer
Systems monitoring enhanced by firewall and intrusion detection features
My primary use case for Fortinet FortiSIEM is systems monitoring and alerting. I use it for standard functions like log monitoring, incident detection, and notification.  My customers are mostly medium-sized enterprises ranging from engineering companies, mining companies, independent schools, and…
Hrishiraj Bhattacharjee - PeerSpot reviewer
Correlates incidents, allows for quicker identification and helps prioritize investigations
The only challenge is, and that’s where we come into play, it’s a pretty high-tech platform. So, it’s difficult for small and medium-sized organizations to manage it on their own. It’s a very complex system. It requires a lot of expertise. All my guys who work on it have gone through certification from Stellar itself. There are three different certifications that you need to complete. Only then are you certified by Stellar to work on it. It’s a very complex platform. Not everyone can use it. A simple IT engineer or system admin won’t be able to handle it because it’s quite complex. You need to have an understanding of the industry, the subject, and the tool. So, just purchasing this tool or license and then using it on your own would be very difficult to configure and manage on a day-to-day basis. The pricing model is not suitable for small and medium companies, particularly small companies. The minimum pricing model they have is suitable for companies with more than one thousand users. So, if someone has 50 to 100 users, like typical small companies, it’s difficult for them because the cost involved is high. Stellar would charge you for those thousand users, but you do not need all those users. So what are they going to do? I guess Stellar does not want to target small companies directly and maybe relies on resellers and MSPs like us to sell it. So, that is something I would recommend changing. Otherwise, it’s a great tool, but because of the pricing model, small companies are unable to leverage the advantage of this beautiful tool. So, the pricing model should be suitable for small and medium businesses. The product currently has vulnerability monitoring and everything. But if they could also do something about vulnerability management and maybe patch management, that would be nice.

Quotes from Members

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

Pros

"The advanced agents used to collect logs have been most valuable. We have also made use of the advanced intelligence this solution offers."
"The product is quite well-organized. The GUI makes it easy to navigate."
"It is used as an alerting platform."
"The CMDB and the device discovery features are most valuable."
"It works well with medium to large-scale enterprises."
"The most valuable feature is the anomaly-reporting alarms."
"Some of our customers who use this solution have seen improvement in their connection with load balancing on both connections."
"Fortinet FortiSIEM provides good detection against advanced threats."
"It can integrate with almost any cybersecurity tool available in the market."
"Stellar Cyber Open XDR offers these functionalities at a more affordable price, making it easier for me to position it with price-sensitive customers."
 

Cons

"Fortinet FortiSIEM could improve to extend to several locations or sites."
"An improvement would be if FortiSIEM's licensing was based on the number of nodes rather than the EPS."
"The challenge I face with Fortinet FortiSIEM is the lack of support."
"The policy editing should be easier. Right now, it's too hard."
"The biggest thing that could be better is a quicker response to support cases."
"I would like to see easier implementation in the future."
"There could be more AI features included in the product."
"They should enhance the solution's AI capabilities, including XDR and EDR."
"Support is an issue because they have a limited number of resources."
"I would rate the stability at about five to six. The platform requires some fine-tuning, especially when integrating data sources and creating connectors."
 

Pricing and Cost Advice

"The price of the solution is expensive. The license is scalable. If there are 10 devices it is simple to license."
"Pricing is determined based on the customer's budget."
"We pay for a license for FortiSIEM. We pay for the license and renewal."
"The price is competitive."
"Fortinet FortiSIEM is cheaper compared to other products."
"The price of Fortinet FortiSIEM was reasonable compared to other solutions."
"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."
"Manageable, however would be better as pay as you go versus CapEX."
"It’s a single license platform."
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
10%
Government
7%
Comms Service Provider
7%
Computer Software Company
14%
Comms Service Provider
11%
Manufacturing Company
10%
Healthcare Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
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?
The pricing is reasonable, which is why it is preferred by government customers. Windows agent licenses cost around 3,000 Rupees per device per year.
What needs improvement with Fortinet FortiSIEM?
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 softw...
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: June 2025.
856,873 professionals have used our research since 2012.