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Fortinet FortiSIEM vs OpenText Enterprise Security Manager comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Mar 29, 2026

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
OpenText Enterprise Security Manager aids compliance and threat detection, though ROI clarity varies due to costs and licensing model.
I find that using ArcSight Enterprise Security Manager (ESM) provides a valuable return on investment as it serves as a single point of glass for logs and data analysis.
Cloud Security Archirect at IBM
 

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 receives mixed reviews, with inconsistent technical support and reliance on self-resolution despite improvements.
There is a knowledgeable, though small, team of support engineers around the world.
Network Engineer at Laminar Communications Pty Ltd
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
They take some time to respond because they need logs and investigations, which delays the response time.
Network Engineer at Ogma Consulting
I would rate the technical support of ArcSight Enterprise Security Manager (ESM) a nine as they are always available and responsive whenever we open a case.
Cloud Security Archirect at IBM
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 adaptable but costly, with licensing concerns affecting budget forecasting despite user satisfaction.
Fortinet FortiSIEM is highly scalable.
Network Engineer at Laminar Communications Pty Ltd
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
Fortinet FortiSIEM is easy to scale.
Network Engineer at Ogma Consulting
It lacks some capabilities compared to other tools available in the market.
Senior Security Engineer at Valuepoint Systems
It is easy to scale, and I have not encountered any issues when we require more storage or deployment.
Cloud Security Archirect at IBM
 

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's stability varies by environment, requiring proper setup; recent patches improve performance but challenges persist.
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
I would rate the stability of ArcSight Enterprise Security Manager (ESM) a nine because I have not encountered significant issues, unlike other solutions that sometimes have database errors.
Cloud Security Archirect at IBM
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.
Users seek better reporting, UX, licensing, enhanced performance, integration, automation, AI advancements, and improved support and training.
Fortinet FortiSIEM should broaden its remediation part to include more features for incident management.
Network Engineer at Ogma Consulting
Enhancing the completeness of its APIs could aid in better external integrations.
Network Engineer at Laminar Communications Pty Ltd
Recently, they revised it to a subscription-based, all-inclusive license.
IT Solutions Product Manager at a computer software company with 11-50 employees
I would like to see the detection and response features included in the next release of ArcSight Enterprise Security Manager (ESM), as security orchestration and automation are increasingly important.
Cloud Security Archirect at IBM
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 considered costly, with varied licensing options, and negotiation advised for potential discounts.
Windows agent licenses cost around 3,000 Rupees per device per year.
Network Engineer at Ogma Consulting
Setting it up for oneself as an enterprise-licensed product can be quite expensive.
Network Engineer at Laminar Communications Pty Ltd
The revised model is subscription-based and more flexible.
IT Solutions Product Manager at a computer software company with 11-50 employees
ArcSight Enterprise Security Manager (ESM) is very cheap compared to other tools.
Senior Security Engineer at Valuepoint Systems
I would rate the pricing of ArcSight Enterprise Security Manager (ESM) around seven, as it varies based on features and demand, making it more affordable for larger organizations, while smaller ones might find it expensive.
Cloud Security Archirect at IBM
 

Valuable Features

Fortinet FortiSIEM provides automation, analytics, and integration with a user-friendly interface for efficient threat detection and network monitoring.
OpenText Enterprise Security Manager offers versatility, strong vendor support, effective event correlation, and user-friendly integration for enhanced security analysis.
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
I find the real-time monitoring and correlation capabilities effective for security alerts.
Network Engineer at Ogma Consulting
The log analysis feature is particularly valuable as it allows analysts to interpret intrusion-related logs efficiently.
Cloud Security Archirect at IBM
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)
9th
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
75
Ranking in other categories
AI Observability (10th)
OpenText Enterprise Securit...
Ranking in Security Information and Event Management (SIEM)
25th
Average Rating
7.8
Reviews Sentiment
6.7
Number of Reviews
99
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2026, in the Security Information and Event Management (SIEM) category, the mindshare of Fortinet FortiSIEM is 2.3%, down from 3.2% compared to the previous year. The mindshare of OpenText Enterprise Security Manager is 1.5%, up from 1.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Fortinet FortiSIEM2.3%
OpenText Enterprise Security Manager1.5%
Other96.2%
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.
SM
Cloud Security Archirect at IBM
Unified log analysis has strengthened incident detection and supports continuous attack simulation
I do not have any areas for improvement in ArcSight Enterprise Security Manager (ESM) as I have not delved deeply into it; overall, it is a good package. I would like to see the detection and response features included in the next release of ArcSight Enterprise Security Manager (ESM), as security orchestration and automation are increasingly important.
report
Use our free recommendation engine to learn which Security Information and Event Management (SIEM) solutions are best for your needs.
896,387 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
Financial Services Firm
10%
Comms Service Provider
9%
Computer Software Company
9%
Outsourcing Company
7%
Financial Services Firm
14%
Marketing Services Firm
10%
Comms Service Provider
8%
Manufacturing 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 Business37
Midsize Enterprise14
Large Enterprise59
 

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...
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 is your experience regarding pricing and costs for ArcSight Enterprise Security Manager (ESM)?
I would rate the pricing of ArcSight Enterprise Security Manager (ESM) around seven, as it varies based on features and demand, making it more affordable for larger organizations, while smaller one...
What needs improvement with ArcSight Enterprise Security Manager (ESM)?
I do not have any areas for improvement in ArcSight Enterprise Security Manager (ESM) as I have not delved deeply into it; overall, it is a good package. I would like to see the detection and respo...
 

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: April 2026.
896,387 professionals have used our research since 2012.