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Fortinet FortiSIEM vs Observer GigaStor comparison

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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
75
Ranking in other categories
Security Information and Event Management (SIEM) (11th), AI Observability (14th)
Observer GigaStor
Average Rating
9.0
Reviews Sentiment
8.1
Number of Reviews
7
Ranking in other categories
Network Monitoring Software (85th), Network Troubleshooting (15th), Network Packet Broker (NPB) (8th)
 

Mindshare comparison

Fortinet FortiSIEM and Observer GigaStor 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 2.2%, down 3.5% compared to last year.
Observer GigaStor, on the other hand, focuses on Network Monitoring Software, holds 0.5% mindshare, up 0.2% since last year.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Fortinet FortiSIEM2.2%
Splunk Enterprise Security7.8%
IBM Security QRadar5.6%
Other84.4%
Security Information and Event Management (SIEM)
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Observer GigaStor0.5%
Zabbix3.6%
SolarWinds NPM3.6%
Other92.3%
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.
Jeroen-Dubbelman - PeerSpot reviewer
Director at Bitrate
Aids significantly in the threat-hunting process and provides a score-based evaluation of user experience
There are many valuable features, but understanding end-user response times stands out. It provides a score-based evaluation of user experience, helping customers quickly pinpoint whether issues originate from the network, server, client, or application. Additionally, it facilitates in-depth analysis of application dependencies. The retrospective network analysis capability of Observer GigaStor has been beneficial. It's a pivotal feature for network performance solutions. However, I prefer to consider the entire solution suite - GigaStor, along with GigaFlow and Apex - for comprehensive network visibility and monitoring. So, I prefer to integrate all three solutions to provide the best visibility. They complement each other well, with Apex aggregating and correlating data from both GigaStor and GigaFlow to enhance environmental understanding and troubleshooting efficiency.

Quotes from Members

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

Pros

"The solution has an all-in-one approach, where we buy one product and everything our customer needs is included, without additional licenses for more functionality, and any adjustments are done very quickly and easily."
"The interface is very easy to use. The connector in the core has FortiSIEM support from the vendor."
"Real-time monitoring makes life quite easy for me."
"The most valuable feature of Fortinet FortiSIEM is the user and entity behave as analytics(UEBA). This feature mixes your data and provides useful information based on the behavior of the targeted."
"FortiSIEM's log correlation is good."
"The advanced agents used to collect logs have been most valuable. We have also made use of the advanced intelligence this solution offers."
"The most fascinating aspect of FortiSIEM is its integration with the MITRE ATT&CK framework."
"We like the integration of all of these Fortinet platforms together. Everything is integrated well, and we are able to sell that as a service to our customers."
"I also have the ability to see an application's performance, to see what's going on, why a network is slow, why this program for this user is experiencing a delay or some network issue"
"I have no regrets using this product, I am very satisfied for what I paid for it and for the things I am able to do with the product."
"Go take a look at it. It's a great product and has great capabilities."
"It's able to capture packets and, after a long time, you can come and use that information; to check, to analyze - everything you would want to do. So it's very good and helpful if you want to protect your data. It is stored in a certain place where you can access it every time you want to analyze it."
"Enables us to go back in time to capture an issue and analyze it for a solution, and this after the fact analysis is key to overcoming the bump in the night issues."
"It can help to write your rules, organize firewalls, your block, and also your protocols and IP address to come in or out of your network."
"Industry-leading line rates, packet-capture technology and data-mining capabilities are the most valuable features."
"There are many valuable features, but understanding end-user response times stands out. It provides a score-based evaluation of user experience, helping customers quickly pinpoint whether issues originate from the network, server, client, or application. Additionally, it facilitates in-depth analysis of application dependencies."
 

Cons

"Our team tried configuring MS SQL database logs with Fortinet FortiSIEM, but it did not work for some time."
"The performance can be improved. Sometimes it takes a long time to fetch data."
"In the CMDB configuration monitoring, if there is a configuration on the wrong side of the network or there are changes that result in harm to our IT infrastructure, the solution should immediately fix it."
"The solution needs to do a better job with third party integration. Right now, that's lacking on the solution. I specifically am talking about the AWS environment. Most of the AWS environment products do not have that capability to integrate."
"Fortinet FortiSIEM could improve by having better integration and extensions. This would benefit by allowing us to give more rules."
"FortiSIEM is not a market leader in the SIEM space."
"When our team tried configuring logs for Microsoft SQL, it did not work."
"As we're an SMB, I would like to see different licensing options and the solution is priced out of the reach of some small businesses."
"The interface is pretty complex, so for the average user, it takes a while to get up to speed with it. I would like it to be more user-friendly."
"GigaStor feeds into Apex. So, the area where there could be improvement would be in artificial intelligence. For example, the incorporation of more advanced machine learning or AI capabilities could enhance its functionality."
"Graphics need improvement. Because a lot of the information there you have to input first in some case to have full potential. It could be more automated."
"There are some issues, in our environment that puts processing restraints on the Gigastor when turning on trending data to be sent to APEX."
"The Observer Console UI is consistent and stable, but could use some updating to be more modern."
"I would like to have more than 4TB of storage available in the portable version of this solution."
"Maybe the graphical user interface could be simplified to allow people to use it more easily. It's already good, but they can work more on it to make it even easier."
 

Pricing and Cost Advice

"Manageable, however would be better as pay as you go versus CapEX."
"Fortinet FortiSIEM is cheaper compared to other products."
"Fortinet's products are not expensive, it is less than the competition."
"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."
"They have a yearly subscription."
"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."
"Fortinet FortiSIEM is not an expensive solution."
"It depends on the requirements you have. There are three types of license. There's the updates license, the work group license, and the workstation license."
"It's quite expensive."
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Top Industries

By visitors reading reviews
Outsourcing Company
11%
Comms Service Provider
9%
Financial Services Firm
9%
Construction Company
8%
Construction Company
18%
Financial Services Firm
13%
Outsourcing Company
10%
Computer Software Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business34
Midsize Enterprise22
Large Enterprise24
By reviewers
Company SizeCount
Small Business5
Large Enterprise3
 

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.
Cisco Systems, Hawaiian Telecom, Renown Health, State of Nevada, U.S. Department of Veteran Affairs, Allstate Insurance, Jack Henry & Associates, United States Airforce, US Bank, Blue Cross Blue Shield of Minnesota, Texas Tech University Health Sciences Center, Chicago Board Options Exchange
Find out what your peers are saying about Splunk, IBM, Microsoft and others in Security Information and Event Management (SIEM). Updated: September 2026.
914,351 professionals have used our research since 2012.