Try our new research platform with insights from 80,000+ expert users

Fortinet FortiSIEM vs OpenText Enterprise Security Manager comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 28, 2025

Review summaries and opinions

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

ROI

Sentiment score
5.1
Fortinet FortiSIEM delivers security improvements and customer satisfaction, leading to positive financial outcomes despite no explicit ROI measurement.
Sentiment score
4.9
ROI from OpenText Enterprise Security Manager varies widely, influenced by threat detection, compliance benefits, and prevention of incidents.
The platform has resulted in time saved and reduces mean time to response, making it a great platform.
Cybersecurity Team Leader at EMAK For Integrated Solutions
 

Customer Service

Sentiment score
7.7
Fortinet FortiSIEM's customer service is seen as professional but has mixed reviews on response times and support accessibility.
Sentiment score
5.4
OpenText Enterprise Security Manager support receives mixed reviews, with common complaints about slow resolution and inadequate expertise in complex issues.
The customer support for Fortinet FortiSIEM is excellent.
Cybersecurity Team Leader at EMAK For Integrated Solutions
Local tech support is available, however, for more critical or technical issues, we depend on the OEM directly, especially when it comes to on-prem solutions.
IT Solutions Product Manager at a computer software company with 11-50 employees
There is a knowledgeable, though small, team of support engineers around the world.
Network Engineer at Laminar Communications Pty Ltd
If I raise a P1 or P0 ticket, the response time is often delayed by four to eight hours.
Senior Security Engineer at Valuepoint Systems
 

Scalability Issues

Sentiment score
7.6
Fortinet FortiSIEM scales well, accommodating different business sizes but faces challenges with licensing, architecture, and configuration complexities.
Sentiment score
5.9
OpenText Enterprise Security Manager is scalable for large deployments but faces cost challenges at the logger level.
Fortinet FortiSIEM is highly scalable.
Network Engineer at Laminar Communications Pty Ltd
Fortinet FortiSIEM's scalability is excellent, and it is also easy to configure, maintain, and operate.
Cybersecurity Team Leader at EMAK For Integrated Solutions
At any point in time, when network devices increase or there is a change in the infrastructure, we can add more workers and collectors to expand our infrastructure setup.
IT Solutions Product Manager at a computer software company with 11-50 employees
It lacks some capabilities compared to other tools available in the market.
Senior Security Engineer at Valuepoint Systems
 

Stability Issues

Sentiment score
6.2
Fortinet FortiSIEM is reliable and stable, handling updates well, with users rating its performance highly despite occasional bugs.
Sentiment score
5.1
OpenText Enterprise Security Manager is stable and reliable, though performance varies with challenges in virtualization and specific components.
It stabilizes itself in an appropriate time, so its uptime is good.
IT Solutions Product Manager at a computer software company with 11-50 employees
Some stability issues occur, but Fortinet's technical support team provides assistance.
Network Engineer at Ogma Consulting
These issues may cause unusual errors and user interface issues.
Network Engineer at Laminar Communications Pty Ltd
The stability of ArcSight Enterprise Security Manager (ESM) is not very robust.
Senior Security Engineer at Valuepoint Systems
 

Room For Improvement

Fortinet FortiSIEM needs improvements in integration, user interface, support, cost, and features like AI and automated responses.
OpenText Enterprise Security Manager needs user interface upgrades, better integration, improved documentation, and enhancements in analytics and scalability.
Fortinet FortiSIEM should broaden its remediation part to include more features for incident management.
Network Engineer at Ogma Consulting
Recently, they revised it to a subscription-based, all-inclusive license.
IT Solutions Product Manager at a computer software company with 11-50 employees
The built-in APIs in Fortinet FortiSIEM are somewhat lacking and could be improved for better integration with external ITSM products.
Network Engineer at Laminar Communications Pty Ltd
The integration aspect of ArcSight Enterprise Security Manager (ESM) needs improvement.
Senior Security Engineer at Valuepoint Systems
 

Setup Cost

Fortinet FortiSIEM provides flexible pricing that can be cost-effective, but costs may increase with additional modules and scalability.
OpenText Enterprise Security Manager is costly but offers robust features and scalability, with possible discounts and cost management strategies.
Setting it up for oneself as an enterprise-licensed product can be quite expensive.
Network Engineer at Laminar Communications Pty Ltd
Windows agent licenses cost around 3,000 Rupees per device per year.
Network Engineer at Ogma Consulting
My experience with pricing, setup cost, and licensing for Fortinet FortiSIEM is wonderful, as it offers an excellent license compared to other vendors.
Cybersecurity Team Leader at EMAK For Integrated Solutions
ArcSight Enterprise Security Manager (ESM) is very cheap compared to other tools.
Senior Security Engineer at Valuepoint Systems
 

Valuable Features

Fortinet FortiSIEM provides automation, analytics, and integration with a user-friendly interface for efficient threat detection and network monitoring.
ArcSight offers advanced threat detection, robust integration, customizable dashboards, and automates event correlation for efficient security operations.
I find the real-time monitoring and correlation capabilities effective for security alerts.
Network Engineer at Ogma Consulting
It provides extensive logging and record-keeping for internal networks, cloud applications, and services as well as perimeter physical network security.
Network Engineer at Laminar Communications Pty Ltd
Reliability and scalability have helped me in my work, especially because the license for Fortinet FortiSIEM is excellent from a cost perspective, and we can add more collectors as we expand.
Cybersecurity Team Leader at EMAK For Integrated Solutions
The ability to interpret data is highly valued.
Senior Security Engineer at Valuepoint Systems
 

Categories and Ranking

Fortinet FortiSIEM
Ranking in Security Information and Event Management (SIEM)
7th
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
76
Ranking in other categories
AI Observability (9th)
OpenText Enterprise Securit...
Ranking in Security Information and Event Management (SIEM)
21st
Average Rating
7.8
Reviews Sentiment
6.7
Number of Reviews
98
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of December 2025, in the Security Information and Event Management (SIEM) category, the mindshare of Fortinet FortiSIEM is 3.0%, up from 3.0% compared to the previous year. The mindshare of OpenText Enterprise Security Manager is 1.6%, up from 1.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Market Share Distribution
ProductMarket Share (%)
Fortinet FortiSIEM3.0%
OpenText Enterprise Security Manager1.6%
Other95.4%
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.
NM
Senior Security Engineer at Valuepoint Systems
Interpreting data effectively despite challenges in integration and support
If someone lacks the budget for a new SIEM tool with advanced capabilities, I would recommend ArcSight Enterprise Security Manager (ESM). However, if they have the budget, I would suggest looking into other options. Overall, I would give ArcSight Enterprise Security Manager (ESM) a rating of seven out of ten.
report
Use our free recommendation engine to learn which Security Information and Event Management (SIEM) solutions are best for your needs.
879,259 professionals have used our research since 2012.
 

Comparison Review

VS
Manager, Enterprise Risk Consulting at a tech company with 1,001-5,000 employees
Jun 28, 2015
Qradar vs. ArcSight
Continuing with the SIEM posts we have done at Infosecnirvana, this post is a Head to head comparison of the two Industry leading SIEM products in the market – HP ArcSight and IBM QRadar Both the products have consistently been in the Gartner Leaders Quadrant. Both HP and IBM took over niche SIEM…
 

Top Industries

By visitors reading reviews
Computer Software Company
12%
Financial Services Firm
10%
Comms Service Provider
8%
Government
7%
Manufacturing Company
11%
Financial Services Firm
10%
Computer Software Company
10%
Performing Arts
9%
 

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 Business37
Midsize Enterprise14
Large Enterprise57
 

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?
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.
Which is the best SIEM tool for a mid-sized financial services firm: Arcsight or Securonix?
In my market, a lot of financial companies had or have an ArcSight installation. Just because in former times it was pretty good. Now a lot of them are looking for a more effective solution due to ...
What do you like most about ArcSight Enterprise Security Manager (ESM)?
We utilize ArcSight ESM for real-time threat detection in our organization. We have custom rules that we've developed on top of the WAN services, along with scheduled licensing activities.
What is your experience regarding pricing and costs for ArcSight Enterprise Security Manager (ESM)?
ArcSight Enterprise Security Manager (ESM) is very cheap compared to other tools. It is worth the investment if you are considering the cost.
 

Also Known As

FortiSIEM, AccelOps
Micro Focus ArcSight, HPE ArcSight, ArcSight
 

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.
Lake Health, U.S. Department of Health and Human Services, Bank AlJazira, Banca Intesa, and Obrela.
Find out what your peers are saying about Fortinet FortiSIEM vs. OpenText Enterprise Security Manager and other solutions. Updated: December 2025.
879,259 professionals have used our research since 2012.