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AlienVault OSSIM vs OpenText Enterprise Security Manager comparison

AT&T and OpenText are both solutions in the Security Information and Event Management (SIEM) category. AT&T is ranked #12 with an average rating of 7.4, while OpenText is ranked #22 with an average rating of 7.0. AT&T holds a 2.8% mindshare in SIEM, compared to OpenText’s 1.5% mindshare. Additionally, 80% of AT&T users are willing to recommend the solution, compared to 88% of OpenText users who would recommend it.
AlienVault OSSIM
Read 31 AlienVault OSSIM reviews
  • 4,916 Views
  • 4,818 Comparison Views
80% willing to recommend
OpenText Enterprise Securit...
Read 98 OpenText Enterprise Security Manager reviews
  • 2,664 Views
  • 2,557 Comparison Views
88% willing to recommend
 

Comparison Buyer's Guide

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Executive SummaryUpdated on Jun 19, 2025

OpenText Enterprise Security Manager and AlienVault OSSIM compete in the enterprise security management category. OpenText ESM seems to have the upper hand in terms of robustness and customization, making it more suitable for large organizations.

Features: OpenText ESM includes comprehensive integration, real-time threat detection, and scalability. AlienVault OSSIM provides a user-friendly dashboard, data correlation, and vulnerability assessment.

Room for Improvement: OpenText ESM requires user interface enhancements, better reporting capabilities, and improved threat intelligence integration. AlienVault OSSIM needs to enhance its scalability, improve integration capabilities, and streamline response times.

Ease of Deployment and Customer Service: OpenText ESM offers hybrid and cloud solutions but has a steep learning curve. Customer service may experience delays. AlienVault OSSIM supports on-premises and cloud deployments and offers simpler installations with some support delays noted.

Pricing and ROI: OpenText ESM is relatively expensive with a complex licensing model but provides high ROI for large enterprises. AlienVault OSSIM is open-source, offering budget-friendly options with potential high ROI for smaller enterprises.

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To learn more, read our detailed AlienVault OSSIM vs. OpenText Enterprise Security Manager Report (Updated: July 2025).
Buyer's Guide
AlienVault OSSIM vs. OpenText Enterprise Security Manager
July 2025
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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

AlienVault OSSIM
Ranking in Security Information and Event Management (SIEM)
12th
Average Rating
7.4
Reviews Sentiment
7.1
Number of Reviews
31
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
6.7
Number of Reviews
98
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2025, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 2.8%, down from 4.4% compared to the previous year. The mindshare of OpenText Enterprise Security Manager is 1.5%, 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 (%)
AlienVault OSSIM2.8%
OpenText Enterprise Security Manager1.5%
Other95.7%
Security Information and Event Management (SIEM)
 

Featured Reviews

HarshBhardiya - PeerSpot reviewer
An open-source solution that provide good detection and more visibility
The solution is not scalable. It impacts so hard. In the initial stages, AlienVault OSSIM can be suitable for small environments. There may be limitations if the customer expresses a desire to expand and add more devices. In such cases, we would need to either explore additional solutions or work within the constraints of the existing setup. We have set up alerts and configured everything in AlienVault OSSIM. It actively monitors for any security incidents. It provides us with regular updates and notifications about any ongoing activities. Only one person is using the solution. It is the perfect solution for small businesses. I rate the solution’s scalability a three out of ten.
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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.
Read full review

Quotes from Members

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

Pros

"The threat policies of the solution are always very advanced and the best in the market. They are very persistent in terms of keeping up with security protocols."
"The most valuable features of AlienVault OSSIM are vulnerability assessment, network intrusion detection system, response to critical events, and awareness of the whole network."
"The most valuable features of AlienVault OSSIM are case management, ease of configuration, and investigation."
"The tool's security detection is good. It helps us with login tracking and generating reports. We aim to identify potential issues, such as brute-force attacks on user accounts or server-level anomalies. For instance, if I receive a report indicating a server is at an abnormal level, I investigate and address the issue."
"The solution has a very good open source community, and whenever we have problems, we are always able to resolve it online."
"The paid version of the solution has reporting and better scalability options."
"The product is majorly used for threat detection of the agents on servers and endpoints."
"The initial setup is straightforward."
More AlienVault OSSIM pros
"The correlation feature is good."
"The tool is good for correlation and aggregation. We use it as a collection platform."
"It gives better overall visibility. Before, we didn't have a unified system for managing security alerts. ArcSight introduced various alerts, giving us a better visibility of potential problems."
"We use ArcSight ESM for log analysis and security alerts. It warns us of threats and then helps us conduct a forensic investigation of a cyber attack or internal incident after it happens."
"Feature-rich solution which provides better network visibility for improved security"
"I think that the overall experience with this solution is good, but in particular, I think that the dashboards are quite interactive."
"The solution is pretty stable."
"The out-of-the-box rules that help us configure functioning rules within the environment are valuable."
More OpenText Enterprise Security Manager pros
 

Cons

"GUI could be improved."
"There are somewhat more false positives with the user behavior analytics, which could benefit from an additional machine learning model to detect user patterns more rapidly."
"The user interface could be improved."
"The solution is not scalable."
"It's under heavy traffic. If you have heavy traffic, the system is slow."
"It's so hard to configure and explore something new on it."
"AlienVault OSSIM’s configuration and integration could be a little easier."
"I would like the solution to be able to integrate with my firewall, my IDS and my Honeypot solutions so that it can provide real-time reporting as things occur and then have alert sent to me on my phone when suspicious activity is happening."
More AlienVault OSSIM cons
"Currently lacks SOAR feature."
"It would be nice if the interface were more user-friendly, with, for example, a minimal number of tabs to navigate."
"The product should include a lot more predefined scenarios so the adopted company will have knowledge and a broader skill set in security and network."
"Customer service during the transition from HPE to Micro Focus was abysmal where it became disruptive to our service delivery."
"Could benefit from a more modern interface."
"It would be nice to have it on the cloud so that you can deploy it easily, saving time and resources."
"The biggest requirement is that there is no cloud solution for this product yet. They need to create a cloud version. It's the biggest thing they can do to make the solution better."
"Deployment typology could be improved. Difficult to scale across all the different lines of businesses."
More OpenText Enterprise Security Manager cons
 

Pricing and Cost Advice

"The licensing fees for the non-community edition are paid on an annual basis, and there are no costs in addition to this."
"When comparing AlienVault OSSIM to Microsoft Sentinel, AlienVault OSSIM incurs additional costs due to its licensing price structure. If you are using AlienVault for security purposes at a certain level it can have a higher price point than the current pricing of Microsoft Sentinel."
"The solution is open source, so it's free to use."
"AlienVault OSSIM is free."
"OSSIM is open source, and USM is the paid license. So, if you want, you can switch to USM. There you will have to buy a license, and they have a support team that helps you out on issues you face."
"AlienVault OSSIM is expensive compared to its competitors."
"We are using the community version, which can be used for free."
"OSSIM is free."
More AlienVault OSSIM pricing and cost advice
"Thanks to Micro Focus's licensing model, as an MSSP, we are able to see a complete return on our investment almost immediately."
"The pricing model is expensive compared to open-source alternatives."
"ArcSight is pretty expensive compared with its competitors. I believe that is fine as it provides value."
"There is a license required for this solution."
"ArcSight ESM is an affordable solution, it cost approximately $200,000 for three years. This price was at a substantial discount."
"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."
"Customers without a ton of resources to dedicate to deployment may be better served by a managed ArcSight service."
"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."
More OpenText Enterprise Security Manager pricing and cost advice
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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…
Read full review
 

Top Industries

By visitors reading reviews
Computer Software Company
14%
Comms Service Provider
12%
University
8%
Educational Organization
8%
Financial Services Firm
14%
Computer Software Company
13%
Manufacturing Company
11%
Educational Organization
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business18
Midsize Enterprise9
Large Enterprise8
By reviewers
Company SizeCount
Small Business37
Midsize Enterprise14
Large Enterprise57
 

Questions from the Community

What do you like most about AlienVault OSSIM?
Asset discovery is good.
See all answers
What is your experience regarding pricing and costs for AlienVault OSSIM?
It depends. I would need to review their cost models, but generally, they are on a scaled basis based on throughput usage. Because it's a software as a service solution for their core product for U...
See all answers
What needs improvement with AlienVault OSSIM?
Scaling for USM is always challenging for any product unless it is purpose-built or overbuilt at the front end. They will use Palo Alto and its competitors, and LevelBlue will manage that implement...
See all answers
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 ...
See all answers
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.
See all answers
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.
See all answers
 

Comparisons

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Compared 6% of the time
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Venusense USM vs AlienVault OSSIM
Compared 5% of the time
Splunk Enterprise Security vs AlienVault OSSIM Logo
Splunk Enterprise Security vs AlienVault OSSIM
Compared 4% of the time
Elastic Security vs AlienVault OSSIM Logo
Elastic Security vs AlienVault OSSIM
Compared 4% of the time
More AlienVault OSSIM Competitors
Trellix ESM vs OpenText Enterprise Security Manager Logo
Trellix ESM vs OpenText Enterprise Security Manager
Compared 20% of the time
IBM Security QRadar vs OpenText Enterprise Security Manager Logo
IBM Security QRadar vs OpenText Enterprise Security Manager
Compared 11% of the time
Splunk Enterprise Security vs OpenText Enterprise Security Manager Logo
Splunk Enterprise Security vs OpenText Enterprise Security Manager
Compared 9% of the time
SurfWatch Labs SurfWatch vs OpenText Enterprise Security Manager Logo
SurfWatch Labs SurfWatch vs OpenText Enterprise Security Manager
Compared 7% of the time
Elastic Security vs OpenText Enterprise Security Manager Logo
Elastic Security vs OpenText Enterprise Security Manager
Compared 6% of the time
More OpenText Enterprise Security Manager Competitors
 

Product Reports

Buyer's Guide
AlienVault OSSIM
September 2025
AlienVault OSSIM reportDownload AlienVault OSSIM product report
Buyer's Guide
OpenText Enterprise Security Manager
August 2025
OpenText Enterprise Security Manager reportDownload OpenText Enterprise Security Manager product report
 

Also Known As

OSSIM
Micro Focus ArcSight, HPE ArcSight, ArcSight
 

Overview

AlienVault OSSIM, Open Source Security Information and Event Management (SIEM), provides you with a feature-rich open source SIEM complete with event collection, normalization and correlation. Launched by security engineers because of the lack of available open source products, AlienVault OSSIM was created specifically to address the reality many security professionals face: A SIEM, whether it is open source or commercial, is virtually useless without the basic security controls necessary for security visibility.

AT&T

OpenText Enterprise Security Manager enables real-time threat detection through scalable and adaptable solutions, integrating seamlessly with multiple platforms for complex security scenarios across different environments.

OpenText Enterprise Security Manager offers extensive security monitoring capabilities, combining log analysis and incident management to enhance cybersecurity and compliance. Its powerful event correlation engine provides real-time alerts for rapid incident response. Users benefit from customizable dashboards and comprehensive log collection, making it a significant tool in the SIEM market. Flexible deployment options cater to both on-premises and cloud environments, supporting enterprises in managing IT infrastructure and threat detection efficiently.

What are the key features of OpenText Enterprise Security Manager?
  • Event Correlation Engine: Real-time threat detection with advanced correlation capabilities.
  • Scalability: Adapts to enterprise-level demands and complex security needs.
  • Integration: Seamlessly integrates with multiple platforms and third-party tools.
  • Customizable Dashboards: Tailored views and active lists enhance user experience.
  • Advanced Alerting: Provides timely incident response and security alerts.
Why should users look for reviews when evaluating OpenText Enterprise Security Manager?
  • Timely Incident Responses: Fast alerting and action against threats.
  • User-Friendly Experience: Customizable dashboards simplify monitoring tasks.
  • Comprehensive Security Management: Integrated log management and threat detection across domains.
  • Adaptability and Scalability: Supports both on-premises and cloud deployments.

In industries such as finance, healthcare, and energy, OpenText Enterprise Security Manager is implemented for monitoring critical systems and ensuring compliance with regulatory needs. Enterprises leverage its capabilities for forensic investigations and active threat management, serving as a central hub for cybersecurity operations across diverse IT infrastructures.

OpenText
 

Sample Customers

Council Rock School District
Lake Health, U.S. Department of Health and Human Services, Bank AlJazira, Banca Intesa, and Obrela.
Buyer's Guide
AlienVault OSSIM vs. OpenText Enterprise Security Manager
July 2025
Free Report: AlienVault OSSIM vs. OpenText Enterprise Security Manager
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