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OpenText Enterprise Security Manager vs Stellar Cyber Open XDR comparison

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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:
 

Categories and Ranking

OpenText Enterprise Securit...
Ranking in Security Information and Event Management (SIEM)
20th
Average Rating
7.8
Reviews Sentiment
6.7
Number of Reviews
99
Ranking in other categories
No ranking in other categories
Stellar Cyber Open XDR
Ranking in Security Information and Event Management (SIEM)
43rd
Average Rating
0.0
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
User Entity Behavior Analytics (UEBA) (29th), Endpoint Detection and Response (EDR) (57th), Network Traffic Analysis (NTA) (16th), Security Orchestration Automation and Response (SOAR) (25th), Network Detection and Response (NDR) (21st), Extended Detection and Response (XDR) (37th), Identity Threat Detection and Response (ITDR) (23rd)
 

Mindshare comparison

As of November 2026, in the Security Information and Event Management (SIEM) category, the mindshare of OpenText Enterprise Security Manager is 1.6%, down from 1.7% compared to the previous year. The mindshare of Stellar Cyber Open XDR is 1.1%, down from 1.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
OpenText Enterprise Security Manager1.6%
Stellar Cyber Open XDR1.1%
Other97.3%
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.
JC
Global Director, Commercial Operations at Promasecure LLC
Automated security monitoring increases efficiency, but market visibility needs improvement
I am currently evaluating Stellar Cyber Open XDR in terms of their support. I do not see any major areas for improvement as of now. Their support is good, and the team is small, enabling them to cater to everyone effectively. While I have not encountered significant drawbacks so far, market penetration is challenging due to the product's newness, despite its flexibility and customization features. I find their user interface to be quite good.

Quotes from Members

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

Pros

"The solution offers very good monitoring."
"It has absolutely improved the efficiency of our security team. We use it internally as well. It is such a powerful tool that our internal security team became a customer of our ArcSight managed service."
"The tool is good for correlation and aggregation. We use it as a collection platform."
"Customization. ArcSight gives you a platform to on-board out-of-the-box devices with a more accurate way of collecting desired logs/events."
"I think the correlation feature is one of the best features of ArcSight."
"ArcSight is better than them all when it comes to filtering, normalization, aggregation, dashboards, reporting and correlation, multi-tenancy and custom devices support."
"It's a reliable service and provides our team members with a lot of knowledge."
"It is easy to use when we created some dashboards for analytics."
"It can integrate with almost any cybersecurity tool available in the market."
"Stellar Cyber Open XDR offers these functionalities at a more affordable price, making it easier for me to position it with price-sensitive customers."
 

Cons

"I have never deployed an ArcSight installation without encountering several issues, I have over 40 deployments to my credit."
"The technical support was not very good. They are slow and not very efficient."
"It's very expensive in its licensing model."
"ArcSight ESM is lacking cloud scalable technology."
"As of now, if we are evaluating our own scenario, we are not even thinking about it."
"The first limitation is with the ArcSight Data Storage Manager (ADSM). ArcSight's total capacity is currently capped at 12 TB. This becomes an issue if a customer needs a longer real-time data retention period, such as exceeding 90 days or reaching a year or even ten months. Increasing the disk space beyond 12 TB is not currently possible."
"The only concern is that AI needs to be integrated"
"The user interface of ArcSight Enterprise Security Manager could improve. It is not very good. Additionally, they could integrate the web interface better."
"Support is an issue because they have a limited number of resources."
"I would rate the stability at about five to six. The platform requires some fine-tuning, especially when integrating data sources and creating connectors."
 

Pricing and Cost Advice

"The licensing cost is affordable if you get an enterprise license. The licensing is based on EPS, so you can probably provide a package of license for multiple ESMs with their correlational end fees. It is cost-effective."
"Price-wise, ArcSight ESM was a bit high compared to competitors, which factored into our decision to switch to Splunk. It couldn't cover all our business needs for what we wanted to implement."
"We're paying a fee for an MSSP, and the cost of the total cost of ArcSight ESM was approximately three to four million dollars a year. The price was less than similar solutions. We did not have additional fees."
"ArcSight is pretty expensive compared with its competitors. I believe that is fine as it provides value."
"Aggregation can help a lot in pushing down licensing costs."
"ArcSight can be a little bit expensive because of the area that we work in and the cost. Licensing is mostly on a yearly basis, not monthly."
"Pricing is good, I'd rate the pricing a seven out of ten, with ten being low price. It's better than Splunk and IBM QRadar because their pricing is based on EPS."
"The solution is super expensive. At our organization size and license model, I think the price is average to what anyone else would charge us."
"It’s a single license platform."
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Use our free recommendation engine to learn which Security Information and Event Management (SIEM) solutions are best for your needs.
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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
Outsourcing Company
14%
Financial Services Firm
12%
Construction Company
10%
Manufacturing Company
7%
Manufacturing Company
14%
Outsourcing Company
10%
Comms Service Provider
10%
Construction Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business37
Midsize Enterprise14
Large Enterprise59
No data available
 

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 is your experience regarding pricing and costs for Stellar Cyber Open XDR?
Pricing is a major benefit of Stellar Cyber Open XDR. I rate it between three and four on the cost scale. It offers functionalities at a significantly lower cost than rival products, enabling me to...
What needs improvement with Stellar Cyber Open XDR?
I am currently evaluating Stellar Cyber Open XDR in terms of their support. I do not see any major areas for improvement as of now. Their support is good, and the team is small, enabling them to ca...
What is your primary use case for Stellar Cyber Open XDR?
I use Stellar Cyber Open XDR ( /products/stellar-cyber-open-xdr-reviews ) as a 24/7 security monitoring tool, especially for customers with large and medium networks. It eliminates the need for a d...
 

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.
Sumitomo Chemical USA, PlastiPak Packaging, University of Denver, Large California State Agency, Large Midwestern American City
Find out what your peers are saying about OpenText Enterprise Security Manager vs. Stellar Cyber Open XDR and other solutions. Updated: September 2026.
920,929 professionals have used our research since 2012.