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AlienVault OSSIM vs Sentinel comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Sep 18, 2024

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)
26th
Average Rating
7.4
Reviews Sentiment
7.1
Number of Reviews
31
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
6.8
Number of Reviews
18
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2026, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 1.2%, down from 3.4% compared to the previous year. The mindshare of Sentinel is 2.7%, 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
ProductMindshare (%)
Sentinel2.7%
AlienVault OSSIM1.2%
Other96.1%
Security Information and Event Management (SIEM)
 

Featured Reviews

BP
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.
Simon Johnston - PeerSpot reviewer
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.

Quotes from Members

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

Pros

"Most of the SOC or SIEM enterprise class products are very expensive, whereas with OSSIM you can start out with a smaller setup and then expand as you wish."
"It is a perfectly nice and free tool for compliance testing, assessment, and some basic vulnerability."
"It has helped us remediate threats in the past by providing significant events that assisted in identifying suspicious activities, such as logins from multiple countries."
"A very good feature of AlienVault OSSIM is that it has many domains that can be integrated from different solutions."
"The threat alerts it gives me from time to time on harmful code within the network, or if they are generating any network traffic, are very useful."
"You can customize the dashboards as well as the reporting."
"The product is easy to use."
"Better than other SIEM solutions because almost everything can be integrated."
"The most valuable feature of this solution is that it provides a central locking system for many event sources."
"The correlation engine allows our clients to generate rules more efficiently."
"The most valuable feature is the flexible log for identifying security threats inside an application. Sentinel is very good at this."
"It provides real time security event analytics."
"Transactional user information improves security, prevents fraud, and promotes best practices."
"We can do advanced hunting queries and modify SQL queries to get desired results based on the rules triggering over the console."
"Sentinel has positively impacted my organization by improving monitoring significantly."
"If Sentinel is integrated with Identity Manager and User Application Portal, the solution runs simply perfect!"
 

Cons

"AlienVault OSSIM on-premise version is more difficult to implement than the cloud version. Additionally, they should add integration between several different environments at once and improve their online knowledge base."
"The documentation could be improved."
"The log collection is okay, but tracing the logs or tracing the events is a bit difficult."
"It takes some time. It does not give me a prompt response for any such [malicious] traffic. It takes time to get that alert from the AlienVault system."
"The incidence reporting could be better."
"The price of this solution is very high and it could be cheaper."
"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."
"Sometimes it takes very long for your issue to get resolved."
"There is a need for more flexibility in customization, especially when working with different vendors and platforms."
"It's probably not a product that I would recommend to anyone."
"This product's connection to certain types of cloud systems could be improved."
"On version 5, builder was somewhat unstable during deployment -> workaround strong procedure with too many middle steps of saves."
"Price is always a consideration, so the price would be nice if it were lower."
"It is an ancient product."
"Some functions look great but, in practice, some key limitations turn the process into something opaque."
"The web interface needs to be improved, as it has a java-based way to call its controls."
 

Pricing and Cost Advice

"AlienVault OSSIM is free."
"AlienVault OSSIM is expensive compared to its competitors."
"OSSIM is free."
"The solution is open source, so it's free to use."
"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."
"AlienVault OSSIM is an open-source solution."
"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."
"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."
"Sentinel is moderately priced."
"Sentinel's slightly on the expensive side."
"Sentinel is a subscription-based solution."
"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."
"We receive a pricing discount because of our ongoing partnership with Micro Focus."
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Top Industries

By visitors reading reviews
Comms Service Provider
13%
Financial Services Firm
8%
University
7%
Computer Software Company
7%
Financial Services Firm
9%
Manufacturing Company
8%
Outsourcing Company
8%
Computer Software Company
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 Business9
Midsize Enterprise3
Large Enterprise8
 

Questions from the Community

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...
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...
What is your primary use case for AlienVault OSSIM?
This solution is very similar to most of the other MSSPs that you would find out there. When I look at use cases, AlienVault was initially aimed at small to medium businesses. It grew, and that was...
What is your experience regarding pricing and costs for NetIQ Sentinel?
My experience with pricing, setup cost, and licensing shows that while it is a little on the higher side, since it is part of a package for all Microsoft products, I feel it is a better choice comp...
What needs improvement with NetIQ Sentinel?
Sentinel needs minimal improvement, though improvements are ongoing. Everything seems to be functioning perfectly, and I don't have any specific inputs for improvements I would like to see in Senti...
What is your primary use case for NetIQ Sentinel?
My main use case for Sentinel is that I'm a subject matter expert for Sentinel, specifically for security incident event and event management. I head the SME for SIEM in LTIMindtree for this curren...
 

Also Known As

OSSIM
NetIQ Sentinel, Novell SIEM
 

Overview

 

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
Find out what your peers are saying about AlienVault OSSIM vs. Sentinel and other solutions. Updated: June 2026.
907,664 professionals have used our research since 2012.