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Elastic Stack vs Security Onion comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 9, 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

Elastic Stack
Ranking in Log Management
14th
Average Rating
8.0
Reviews Sentiment
6.5
Number of Reviews
18
Ranking in other categories
No ranking in other categories
Security Onion
Ranking in Log Management
29th
Average Rating
7.6
Reviews Sentiment
5.5
Number of Reviews
3
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2026, in the Log Management category, the mindshare of Elastic Stack is 2.5%, down from 5.2% compared to the previous year. The mindshare of Security Onion is 2.3%, down from 5.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Log Management Mindshare Distribution
ProductMindshare (%)
Elastic Stack2.5%
Security Onion2.3%
Other95.2%
Log Management
 

Featured Reviews

LB
Senior Consultant at Skillfield
Offers robust out-of-the-box integrations and streamlines logging processes effortlessly
There are improvements needed for Elastic Stack. It is mostly based on Lucene, and the heart of Elastic Stack is Lucene, which has some limitations. Anything built on top of Lucene often feels an add-on, and that includes vector databases. Elastic Stack can store vector embeddings as well and perform AI and machine learning tasks out of the box without excessive configuration. The main improvements involve increasing speed and compression capabilities; I have seen databases that claim to achieve significantly better compression. While Elastic Stack can manage vast amounts of data, if the mapping is not specified correctly, the indexing time can be slow, especially with many events per second. Improper mapping usually means that every document received gets indexed for all fields, which is not desired. Elastic consultants typically optimize this, but out of the box, as data volume increases, scaling becomes necessary. They are working on these improvements in new versions.
Jörg Kippe - PeerSpot reviewer
Scientist at a educational organization with 10,001+ employees
A mature and affordable solution that is easy to install and easy to update
The product takes time to learn, it's not that easy. In the beginning we had a lot of questions. If you want to use such a tool in an real (industrial) environment, you have to ask how to get the network data. Can we do a full packet capture? Can we provide agents to our end systems? There are no simple solutions to these questions. It's a general problem when running such systems in an industrial environment.

Quotes from Members

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

Pros

"It supports various integrations. It's open source and has excellent community support."
"Elastic Stack has made a positive impact as we can now see our logs."
"The tool's most powerful aspect is its search engine capability. It's a highly effective and powerful solution for searching. We use it in professional and student projects at universities, and it delivers promising results."
"The centralized logging capabilities of Elastic Stack have helped me streamline my logging processes significantly because there are many open-source tools available, such as Filebeat and Logstash, to collect the logs."
"The only beneficial aspect of Elastic Stack is that it's open source."
"Elastic Stack is mainly used to monitor servers and APIs. It helps ensure the software's availability and sends notifications at the right time so the system is not down for a long time. The tool's stability and advanced features, such as anomaly detection, are the most valuable features. The benefit of using it is real-time monitoring."
"I have experienced a return on investment from the use of the solution."
"I think the ecosystem is well supported, and for logs, it was faster compared to our previous previous log management."
"The most valuable feature of Security Onion for security monitoring is its ability to find infected ports."
"Security Onion is the most mature solution in the market."
"We use Security Onion for internal vulnerability assessment."
 

Cons

"Agent deployment is a little tough in the on-premise version."
"AI-enablement would be a big improvement in Elastic Stack...If there is room for an ML model in Elastic Stack, then it would be good."
"Support could be improved. The error code is not helpful. We have to ask for it or pass it on to community forums."
"The implementation of dashboards in the solution needs to be made easier...I had some issues with the ports and configuration since it was kind of complex to implement with Docker."
"Improving integration capabilities, especially with authentication systems, firewalls, and security controls, is a crucial area for improvement in Elastic Stack. Additionally, enhancing functionality to handle large Yara queries more efficiently would be beneficial, as many EDR solutions can run such queries faster than Elastic Stack's current limitations."
"The stability of the solution is rated as three or four out of ten as we frequently encounter issues."
"When people try to move the data from another source to Elastic Stack for visualization, they face challenges when connecting to Elastic Stack from such different sources."
"The tool's pricing can be improved."
"The initial setup of the solution is a little bit difficult."
"Security Onion's user interface could be improved."
"The product is not easy to learn."
 

Pricing and Cost Advice

"I used the open-source version of Elastic Stack, because of which I did not have to pay anything."
"The pricing is reasonable."
"If I compare Elastic Stack to the other products in the market, I would say that the tool is available at a competitive price."
"We are using the open-source community version of the product."
"The product is expensive."
"It depends on the specifics, but generally, Elastic is economical for certain use cases."
"Ultimately, the pricing depends upon the capacity planning that the enterprise architect does."
"I rate the solution's pricing a six out of ten."
"Security Onion is an open-source solution."
"Security Onion is a free solution."
"It is an open-source solution."
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Top Industries

By visitors reading reviews
Financial Services Firm
10%
Computer Software Company
10%
Government
8%
Comms Service Provider
7%
University
12%
Government
11%
Comms Service Provider
10%
Computer Software Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise3
Large Enterprise6
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for Elastic Stack?
My experience with Elastic Stack pricing indicates that it is node-based. While I do not have complete pricing details, they are available online. If I choose Elastic Cloud, it includes licensing a...
What needs improvement with Elastic Stack?
I would like to improve Elastic Stack by addressing the current big problem we face with importing logs and log files, such as syslogs. To import these log files, we need to design the ingest pipel...
What is your primary use case for Elastic Stack?
Elastic Stack is primarily used for everything related to security, including security systems, checking the security system, and also servers and networks.
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Comparisons

 

Overview

Find out what your peers are saying about Elastic Stack vs. Security Onion and other solutions. Updated: April 2026.
892,868 professionals have used our research since 2012.