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Fortinet FortiSIEM vs Observer GigaStor 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
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
75
Ranking in other categories
Security Information and Event Management (SIEM) (10th), AI Observability (14th)
Observer GigaStor
Average Rating
9.0
Reviews Sentiment
8.1
Number of Reviews
7
Ranking in other categories
Network Monitoring Software (84th), Network Troubleshooting (13th), 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 2.3%, down 3.3% 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 FortiSIEM2.3%
Splunk Enterprise Security7.3%
IBM Security QRadar5.3%
Other85.1%
Security Information and Event Management (SIEM)
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Observer GigaStor0.5%
Zabbix3.9%
SolarWinds NPM3.6%
Other92.0%
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 most valuable feature is auto-discovery. When you send logs from any device to port 514, it helps register those devices automatically."
"If you are comparing the product to Cisco's solutions, it's very cheap and moderately priced, it's affordable and at the same time a very effective solution that works well."
"Fortinet FortiSIEM is less costly than other products and is available 24/7."
"FortiSIEM is a great tool for making security processes transparent."
"Fortinet support is very fast, and if I need to ask something, I'll get a response within a couple of hours."
"The solution’s IP database is awesome."
"Every feature is good. This is one of the greatest SIEM products on the market."
"There are things like dashboards and reports (pre-configured and custom) that let me know that things are operating the way they should be, and when they are not."
"This solution allows us to see exactly what is going on in the network and we can very quickly solve issues with users."
"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."
"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"
"The ability to capture packets. It is not only for monitoring. That is very important for a company that wants to keep an eye on the packets, the transactions, the flows..."
"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."
"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."
"Industry-leading line rates, packet-capture technology and data-mining capabilities are the most valuable features."
"Go take a look at it. It's a great product and has great capabilities."
 

Cons

"One of the things that actually opened a ticket about (and they couldn’t help me) is when traffic is leaving our network, it’ll only report the source."
"Fortinet FortiSIEM could improve to extend to several locations or sites."
"We expect the latest patch from Fortinet FortiSIEM to give the ability to work with signature files."
"Network detection and response is a separate product."
"With FortiSIEM, the issue has to do with the ways we can generate a report. It's not as flexible compared to that with other SIEM tools, like Splunk."
"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."
"The dashboards need to be improved. It gives you so much detail, but sometimes too much detail, especially to an executive, it's too much."
"The deployment of the platform took some time to set up and configure."
"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."
"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."
"The Observer Console UI is consistent and stable, but could use some updating to be more modern."
"There are some issues, in our environment that puts processing restraints on the Gigastor when turning on trending data to be sent to APEX."
"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."
 

Pricing and Cost Advice

"They have a yearly subscription."
"We bought the perpetual license, so we own the product, but there is a three-year support renewal fee for that."
"FortiSIEM's licensing is based on EPS, and its pricing is competitive in the market."
"Fortinet FortiSIEM is cheaper compared to other products."
"The price of the solution is expensive. The license is scalable. If there are 10 devices it is simple to license."
"Fortinet FortiSIEM is not an expensive solution."
"The price of Fortinet FortiSIEM was reasonable compared to other solutions."
"Fortinet's products are not expensive, it is less than the competition."
"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
Financial Services Firm
9%
Comms Service Provider
9%
Computer Software Company
8%
Construction Company
8%
Construction Company
18%
Financial Services Firm
14%
Computer Software Company
7%
Manufacturing Company
6%
 

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, Wazuh and others in Security Information and Event Management (SIEM). Updated: May 2026.
900,196 professionals have used our research since 2012.