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OpenText Enterprise Security Manager vs SentinelOne Singularity AI SIEM 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
4.9
OpenText Enterprise Security Manager aids compliance and threat detection, though ROI clarity varies due to costs and licensing model.
Sentiment score
5.6
SentinelOne Singularity AI SIEM improves efficiency and productivity with automation, reducing response times and minimizing false positives.
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
If the data gets encrypted, it automatically rolls back.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
Before using SentinelOne Singularity AI SIEM, investigating a moderately complex alert took around thirty to sixty minutes because analysts had to collect logs from multiple security tools.
Desktop Support Engineer at a outsourcing company with 51-200 employees
SentinelOne Singularity AI SIEM has reduced our response time to true positive alerts by approximately forty percent through automation.
IT Security Analyst at a tech consulting company with 11-50 employees
 

Customer Service

Sentiment score
5.4
OpenText Enterprise Security Manager receives mixed reviews, with inconsistent technical support and reliance on self-resolution despite improvements.
Sentiment score
6.7
SentinelOne's AI SIEM earns high ratings for support but faces criticism for agent transfers and additional service costs.
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
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
SentinelOne Singularity AI SIEM has AI-based technical support available.
IT Security Analyst at a tech consulting company with 11-50 employees
Based on my experience with the technical support of SentinelOne Singularity AI SIEM, I would rate them a ten.
Vice President Cyber Security Practice Head at orbit techsol w pvt.ltd
In rating the technical support for SentinelOne, it depends on whether we are discussing EDR or SentinelOne Singularity AI SIEM.
Managing Director at iMark Consult
 

Scalability Issues

Sentiment score
5.9
OpenText Enterprise Security Manager is adaptable but costly, with licensing concerns affecting budget forecasting despite user satisfaction.
Sentiment score
6.1
SentinelOne Singularity AI SIEM is scalable and effective for complex, hybrid environments, requiring skilled implementation and detailed planning.
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
It is designed to handle growing log volumes and supports environments that include on-premises infrastructure, cloud services, endpoints, identity platforms, and network devices.
Desktop Support Engineer at a outsourcing company with 51-200 employees
With any AI adoption, the end goal should be more governance and data security and safety.
Associate Vice President at Novac Technology Solutions
The performance depends on the configuration.
IT Security Analyst at a tech consulting company with 11-50 employees
 

Stability Issues

Sentiment score
5.1
OpenText Enterprise Security Manager's stability varies by environment, requiring proper setup; recent patches improve performance but challenges persist.
Sentiment score
8.1
SentinelOne Singularity AI SIEM is praised for stability and AI, but some find it inefficient and less user-friendly.
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
I have worked with it, and it is very handy, easy to manage, and excellent with its AI-driven capabilities.
Cybersecurity Engineer at Gigabit Technologies Pvt Ltd
When it comes to stability, I would give SentinelOne Singularity AI SIEM a nine.
IT Security Consultant at Systemhaus for you GmbH
In terms of performance stability, I have never had any crashes, downtimes, or performance issues.
Cyber Security Engineer at a retailer with 201-500 employees
 

Room For Improvement

Users seek better reporting, UX, licensing, enhanced performance, integration, automation, AI advancements, and improved support and training.
SentinelOne Singularity AI SIEM requires improvements in performance, customization, integrations, automation, pricing, and clearer AI insights.
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
The adoption rate will be less compared to other products, as this can be a time-taken process because all my data needs to be offloaded and the system needs to understand my existing alerts, logs, and other things.
Associate Vice President at Novac Technology Solutions
The interface flickers frequently, and sometimes it does not load properly.
IT Security Analyst at a tech consulting company with 11-50 employees
Whenever OT security comes into the picture, the customers do not allow us to integrate their OT devices on a cloud. It should be available on-premises because the OT SIEM market, in the India market for instance, is something around a four to eight billion dollar market.
Vice President Cyber Security Practice Head at orbit techsol w pvt.ltd
 

Setup Cost

OpenText Enterprise Security Manager is considered costly, with varied licensing options, and negotiation advised for potential discounts.
SentinelOne Singularity AI SIEM offers a value-driven package with bundled services; its advanced capabilities justify slightly higher costs.
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
I find SentinelOne's pricing to be reasonable and competitive.
Information Security Principal at a venture capital & private equity firm with 1,001-5,000 employees
Features such as centralized log management, AI-driven analytics, automated workflow, and integrated security options can reduce operational overhead and improve SOC efficiency, which helps justify the investment.
Desktop Support Engineer at a outsourcing company with 51-200 employees
Compared to another SIEM tool's pricing, the pricing is the best, from my side.
Technical Support Executive at Softcell Technologies Limited
 

Valuable Features

OpenText Enterprise Security Manager offers versatility, strong vendor support, effective event correlation, and user-friendly integration for enhanced security analysis.
SentinelOne Singularity AI SIEM enhances security with automation, AI analytics, third-party integration, and improved SOC efficiency.
The ability to interpret data is highly valued.
Senior Security Engineer at Valuepoint Systems
The log analysis feature is particularly valuable as it allows analysts to interpret intrusion-related logs efficiently.
Cloud Security Archirect at IBM
We finally have visibility into things that were never visible before.
IT Security Consultant at Systemhaus for you GmbH
It employs a combination of AI and ML to check for viruses or any other malicious processes, including fileless attacks.
Cyber Security Engineer at a retailer with 201-500 employees
The AI-driven threat detection capabilities improve our overall security posture.
Associate Vice President at Novac Technology Solutions
 

Categories and Ranking

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
SentinelOne Singularity AI ...
Ranking in Security Information and Event Management (SIEM)
8th
Average Rating
8.6
Reviews Sentiment
6.4
Number of Reviews
15
Ranking in other categories
AI Observability (6th)
 

Mindshare comparison

As of August 2026, in the Security Information and Event Management (SIEM) category, the mindshare of OpenText Enterprise Security Manager is 1.6%, up from 1.4% compared to the previous year. The mindshare of SentinelOne Singularity AI SIEM is 1.3%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
SentinelOne Singularity AI SIEM1.3%
OpenText Enterprise Security Manager1.6%
Other97.1%
Security Information and Event Management (SIEM)
 

Featured Reviews

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.
Dev Reshwal - PeerSpot reviewer
Technical Support Executive at Softcell Technologies Limited
Automation has reduced workload and real-time monitoring provides faster incident response
SentinelOne Singularity AI SIEM is the best, but sometimes the dashboards are a little simple compared to other tools. The custom dashboard is not available in their features. Therefore, I would suggest adding the custom dashboard for any of our requirements. The AI-driven analytics from SentinelOne Singularity AI SIEM has not affected our ability to reduce false positives. SentinelOne Singularity AI SIEM has affected my SOC's efficiency in investigating alerts and responding to incidents. If we receive any alerts, we can observe what activity is being done. We can see if it is malicious or something suspicious, or a true positive. We can analyze the path, the hash, and whether the signature is verified or not. We can see if it is an alert triggered by any engine. We can see the source of this. We will do that type of analysis and raise it to the client side. Also, if I identify anything suspicious or malicious in the alert, I will forcefully kill and quarantine it immediately.
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909,725 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
13%
Construction Company
12%
Outsourcing Company
9%
Marketing Services Firm
8%
Outsourcing Company
22%
Construction Company
7%
Manufacturing Company
6%
Media Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business37
Midsize Enterprise14
Large Enterprise59
By reviewers
Company SizeCount
Small Business12
Midsize Enterprise5
Large Enterprise4
 

Questions from the Community

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...
What needs improvement with SentinelOne Singularity AI SIEM?
They could expand more integrations for other third-party products that are not currently available. Those are areas they can improve or have yet to improve. For example, we have firewall integrati...
What is your primary use case for SentinelOne Singularity AI SIEM?
Clients can use SentinelOne Singularity AI SIEM for endpoint security solutions, and apart from that, we currently have something called prompt security where it is helping us to enhance control ov...
What advice do you have for others considering SentinelOne Singularity AI SIEM?
The automated workflow feature impacts my security tasks and manual efforts significantly. Downtime is not necessarily required in scenarios where a particular system has to be isolated. Whether it...
 

Also Known As

Micro Focus ArcSight, HPE ArcSight, ArcSight
No data available
 

Overview

 

Sample Customers

Lake Health, U.S. Department of Health and Human Services, Bank AlJazira, Banca Intesa, and Obrela.
Information Not Available
Find out what your peers are saying about OpenText Enterprise Security Manager vs. SentinelOne Singularity AI SIEM and other solutions. Updated: August 2026.
909,725 professionals have used our research since 2012.