AlienVault OSSIM vs Sentinel 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 #17 with an average rating of 7.5. AT&T holds a 1.6% mindshare in SIEM, compared to OpenText’s 3.1% mindshare. Additionally, 80% of AT&T users are willing to recommend the solution, compared to 82% of OpenText users who would recommend it.

AlienVault OSSIM

Read 31 AlienVault OSSIM reviews

4,307 Views
4,221 Comparison Views

80% willing to recommend

Sentinel

Read 17 Sentinel reviews

4,622 Views
4,530 Comparison Views

82% willing to recommend

AlienVault OSSIM

Sentinel

Comparison Buyer's Guide

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Executive SummaryUpdated on Sep 18, 2024

Sentinel and AlienVault OSSIM compete in the cybersecurity sector. Sentinel has the upper hand in pricing and customer service, while AlienVault OSSIM is preferred for its robust features.

Features: Sentinel users like its real-time threat detection, comprehensive reporting tools, and user-friendly interface. AlienVault OSSIM users value its integration capabilities with various security tools, extensive threat intelligence, and advanced monitoring features.

Room for Improvement: Users suggest Sentinel improve scalability, alert management, and user interface intuitiveness. AlienVault OSSIM users highlight the need for a more intuitive interface, faster processing speeds, and better user documentation.

Ease of Deployment and Customer Service: Sentinel is praised for its straightforward deployment process and responsive customer service. AlienVault OSSIM users find the setup more complex but recognize the comprehensive support provided post-deployment.

Pricing and ROI: Sentinel is generally seen as cost-effective with a quicker ROI. Users find AlienVault OSSIM pricier with a longer ROI period, but its advanced capabilities justify the investment.

To learn more, read our detailed AlienVault OSSIM vs. Sentinel Report (Updated: March 2026).

Buyer's Guide

AlienVault OSSIM vs. Sentinel

March 2026

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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

Ranking in other categories

No ranking in other categories

Sentinel

Ranking in Security Information and Event Management (SIEM)

17th

Average Rating

7.6

Reviews Sentiment

6.7

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of March 2026, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 1.6%, down from 4.1% compared to the previous year. The mindshare of Sentinel is 3.1%, down from 3.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Security Information and Event Management (SIEM) Mindshare Distribution
Product	Mindshare (%)
AlienVault OSSIM	1.6%
Sentinel	3.1%
Other	95.3%

Security Information and Event Management (SIEM)

Featured Reviews

Brandon Pearce

Independent Contractor at a comms service provider with 5,001-10,000 employees

Enables cost-effective security management for small businesses

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 implementation. The main area where the AlienVault product was lacking around the 2018 timeframe was in its ability to scale. By pushing it to a cloud-based system, they've largely alleviated scale issues. It's native in Amazon but will also run in Azure. They have worked with cloud service providers to offer enough throughput at a cost reasonable for a corporation. Scaling was their biggest problem, and they've largely conquered those issues.

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Simon Johnston

Manager, Customer Success at Coltek Business Soltuions

Simple antivirus solution integrates well but could improve pricing and currency options

I don't really have experience working with these solutions. I promote them for our clients, but I don't work with them. I can't share my experience with these tools as I make assumptions about that. For both Adlumin and CrowdStrike, both confirm that they're scalable and enterprise-ready and all those kinds of things. We haven't had any specific problem with either of those. We just have a preference for which one we would prefer. If somebody says they want to use a different one from the one that we prefer, then we have to find reasons why they aren't. But scalability is not one of the reasons that one is better over the other. I don't really have advice for people that are looking into using Sentinel; just do your research across what is available. On a scale of one to ten, I rate Sentinel a seven.

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Quotes from Members

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

Pros

"I recommend it due to the experience of the people running it."

"The product is majorly used for threat detection of the agents on servers and endpoints."

"Better than other SIEM solutions because almost everything can be integrated."

"Inbuilt IDS, inbuilt integration with threat intelligence platform and with vulnerability assessment modules."

"OSSIM is the only solution that includes the large number of modules that we need: a vulnerability scanner, a network IDS system, a host IDS system."

"The open vault component and the checking of vulnerabilities are the most valuable features. The page management helps with this. If you know how your device is vulnerable at least you can do something about it."

"The solution has a very good open source community, and whenever we have problems, we are always able to resolve it online."

"Network traffic analysis is highly efficient."

More AlienVault OSSIM pros

"The solution lets us get all the logs properly and regularly monitor customer infrastructure."

"In my opinion, Sentinel's best features include that it's a very easy product to use, it's very simple, and the after-sale service is very good."

"The stability is phenomenal and we never had any issues with downtime or even had to restart."

"The most valuable feature is the flexible log for identifying security threats inside an application. Sentinel is very good at this."

"The tool is simple to use."

"The solution's Kusto Query Language (KQL) execution time is pretty good."

"It makes everything easier by automating some tasks and growing with our needs."

"Sentinel gave us logs to tell us what's going right and wrong in your environment so we could secure the network."

More Sentinel pros

Cons

"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 incidence reporting could be better."

"Sometimes technical issues take very long to get resolved."

"The price of this solution is very high and it could be cheaper."

"The documentation could be improved."

"The main area where the AlienVault product was lacking around the 2018 timeframe was in its ability to scale."

"The user interface needs to be friendlier across the board."

"The solution is not scalable."

More AlienVault OSSIM cons

"Price is always a consideration, so the price would be nice if it were lower."

"There is no integration in the web-side of the tool."

"This product's connection to certain types of cloud systems could be improved. We can do Microsoft, Google, and Amazon, but there are a lot of other things happening in the cloud that we do not connect well enough to. This product could be improved with better connection to cloud-based solutions."

"Creating a drag-and-drop dashboard or workbook in Sentinel is a little more complex compared to other tools like LogRhythm and IBM QRadar."

"There are still a few vendor-specific devices for which Sentinel needs to work on integration, such as Netskope devices."

"It is an ancient product."

"There is a need for more flexibility in customization, especially when working with different vendors and platforms."

"I rate Sentinel a six out of ten for scalability."

More Sentinel cons

Pricing and Cost Advice

"The price of AlienVault OSSIM is too high sometimes for us to present to our customers. The price should be lower. We are on a three-year license to use the solution. We had to pay extra for the support."

"We are using a free version of the solution. If you purchase a license there are more features available but the price is a little high. The solution should be cheaper to allow more customers to be able to afford it."

"I used the paid version of the tool and found it to be expensive. It has been a while since I changed to Securonix. I will have to check whether AlienVault charges per device, user, or log."

"AlienVault pricing is the best. Whatever cost you are paying, you are getting a return on every penny... It's not like your IBM, your QRadar, or Splunk, where the cost is too high."

"The tool's licensing costs are yearly."

"AlienVault OSSIM is expensive compared to its competitors."

"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."

"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."

More AlienVault OSSIM pricing and cost advice

"We receive a pricing discount because of our ongoing partnership with Micro Focus."

"Sentinel's slightly on the expensive side."

"The solution’s pricing is aligned with its competitors."

"We inquired about getting support from the vendor, Micro Focus, but the cost was very high."

"Sentinel is moderately priced."

"Sentinel is a subscription-based solution."

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Top Industries

By visitors reading reviews

Comms Service Provider

12%

Manufacturing Company

Financial Services Firm

University

Computer Software Company

10%

Financial Services Firm

Manufacturing Company

Comms Service Provider

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	18
Midsize Enterprise	9
Large Enterprise	8

By reviewers
Company Size	Count
Small Business	9
Midsize Enterprise	3
Large Enterprise	7

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...

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What needs improvement with AlienVault OSSIM?

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What is your experience regarding pricing and costs for NetIQ Sentinel?

I don't have too many comments overall about pricing as we're in South Africa, so it makes more sense if it's billed in rand. They nearly always bill it in dollars, so if it can be billed in our cu...

See all answers

What needs improvement with NetIQ Sentinel?

I'm not sure what the room for improvement is for Sentinel. It needs to stay current, and it does, so I suppose that's fine. I don't have a high demand for what it should do. Price is always a cons...

See all answers

What is your primary use case for NetIQ Sentinel?

It's our go-to choice for antivirus. I use Sentinel a lot.

See all answers

Comparisons

Wazuh vs AlienVault OSSIM

Compared 31% of the time

Venusense USM vs AlienVault OSSIM

Compared 10% of the time

USM Anywhere vs AlienVault OSSIM

Compared 7% of the time

Splunk Enterprise Security vs AlienVault OSSIM

Compared 7% of the time

IBM Security QRadar vs AlienVault OSSIM

Compared 3% of the time

More AlienVault OSSIM Competitors

Splunk Enterprise Security vs Sentinel

Compared 19% of the time

IBM Security QRadar vs Sentinel

Compared 11% of the time

Wazuh vs Sentinel

Compared 7% of the time

Cortex XSIAM vs Sentinel

Compared 5% of the time

CrowdStrike Falcon vs Sentinel

Compared 4% of the time

More Sentinel Competitors

Product Reports

Buyer's Guide

AlienVault OSSIM

March 2026

Download AlienVault OSSIM product report

Buyer's Guide

Sentinel

February 2026

Download Sentinel product report

Also Known As

OSSIM

NetIQ Sentinel, Novell SIEM

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

Sentinel is a full-featured Security Information and Event Management (SIEM) solution that simplifies the deployment, management and day-to-day use of SIEM, readily adapts to dynamic enterprise environments and delivers the true "actionable intelligence" security professionals need to quickly understand their threat posture and prioritize response.

OpenText

Sample Customers

Council Rock School District

Faysal Bank, GaVI, Handelsbanken, ISC Mªnster, Lambeth Council, Swisscard, The Municipality of Siena, Tukes, University of Dayton, University of the Sunshine Coast

Buyer's Guide

AlienVault OSSIM vs. Sentinel

March 2026

Free Report: AlienVault OSSIM vs. Sentinel

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