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Fortinet FortiSIEM vs OpenText Enterprise Security Manager comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jun 19, 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
1.0
Fortinet FortiSIEM delivers security improvements and customer satisfaction, leading to positive financial outcomes despite no explicit ROI measurement.
Sentiment score
8.9
OpenText Enterprise Security Manager's ROI is challenging to quantify but enhances threat detection, compliance, and organizational security efficiency.
 

Customer Service

Sentiment score
7.4
Fortinet FortiSIEM's customer service is seen as professional but has mixed reviews on response times and support accessibility.
Sentiment score
5.7
OpenText Enterprise Security Manager's service is satisfactory but faces issues with technical support consistency and problem management resolution.
There is a knowledgeable, though small, team of support engineers around the world.
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.
They take some time to respond because they need logs and investigations, which delays the response time.
If I raise a P1 or P0 ticket, the response time is often delayed by four to eight hours.
 

Scalability Issues

Sentiment score
7.2
Fortinet FortiSIEM scales well, accommodating different business sizes but faces challenges with licensing, architecture, and configuration complexities.
Sentiment score
7.1
OpenText Enterprise Security Manager offers strong scalability but is costly, requiring expertise and careful budgeting for extensive deployments.
Fortinet FortiSIEM is highly scalable.
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.
Fortinet FortiSIEM is easy to scale.
It lacks some capabilities compared to other tools available in the market.
 

Stability Issues

Sentiment score
5.6
Fortinet FortiSIEM is reliable and stable, handling updates well, with users rating its performance highly despite occasional bugs.
Sentiment score
7.1
OpenText Enterprise Security Manager is reliable but depends on proper setup; issues are rare when optimized correctly.
It stabilizes itself in an appropriate time, so its uptime is good.
Some stability issues occur, but Fortinet's technical support team provides assistance.
These issues may cause unusual errors and user interface issues.
The stability of ArcSight Enterprise Security Manager (ESM) is not very robust.
 

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 UI upgrades, performance improvements, better integration, support, deployment, analytics, and scalability enhancements.
Fortinet FortiSIEM should broaden its remediation part to include more features for incident management.
Enhancing the completeness of its APIs could aid in better external integrations.
Recently, they revised it to a subscription-based, all-inclusive license.
The integration aspect of ArcSight Enterprise Security Manager (ESM) needs improvement.
 

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 pricing, while high, is justified by its robust features and deemed competitive for enterprise needs.
Windows agent licenses cost around 3,000 Rupees per device per year.
Setting it up for oneself as an enterprise-licensed product can be quite expensive.
The revised model is subscription-based and more flexible.
ArcSight Enterprise Security Manager (ESM) is very cheap compared to other tools.
 

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 powerful integration, real-time threat detection, customization, and robust event management for security teams.
It provides extensive logging and record-keeping for internal networks, cloud applications, and services as well as perimeter physical network security.
I find the real-time monitoring and correlation capabilities effective for security alerts.
The ability to interpret data is highly valued.
 

Categories and Ranking

Fortinet FortiSIEM
Ranking in Security Information and Event Management (SIEM)
7th
Average Rating
7.6
Reviews Sentiment
5.8
Number of Reviews
75
Ranking in other categories
No ranking in other categories
OpenText Enterprise Securit...
Ranking in Security Information and Event Management (SIEM)
22nd
Average Rating
7.8
Reviews Sentiment
7.5
Number of Reviews
98
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of August 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 OpenText Enterprise Security Manager is 1.4%, up from 1.3% 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…
Gaurav Ranade - PeerSpot reviewer
Excels at performing regression and correlation on the data
ArcSight is a legacy technology, and many customers want AI-powered technologies integrated with it. That hasn't been done yet, but ArcSight needs to catch up with the newer solutions and technologies available in the market. It can't just rely on the legacy technology from 2010 or 2012. You can't run that in 2024. It's a legacy technology with its own limitations. Customers often face issues that other software or newer solutions can resolve easily. That's the main challenge we face from customers right now. So, the only concerns are that AI needs to be integrated and scalability improved. Those are the main areas to be improved.
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Use our free recommendation engine to learn which Security Information and Event Management (SIEM) solutions are best for your needs.
865,164 professionals have used our research since 2012.
 

Comparison Review

VS
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
13%
Financial Services Firm
9%
Government
7%
Comms Service Provider
7%
Financial Services Firm
15%
Computer Software Company
13%
Manufacturing Company
11%
Educational Organization
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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...
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: July 2025.
865,164 professionals have used our research since 2012.