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Corelight Open NDR vs Stellar Cyber Open XDR comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Apr 22, 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

Corelight Open NDR
Ranking in Network Traffic Analysis (NTA)
3rd
Ranking in Network Detection and Response (NDR)
7th
Average Rating
8.8
Reviews Sentiment
7.6
Number of Reviews
7
Ranking in other categories
No ranking in other categories
Stellar Cyber Open XDR
Ranking in Network Traffic Analysis (NTA)
16th
Ranking in Network Detection and Response (NDR)
20th
Average Rating
0.0
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
Security Information and Event Management (SIEM) (47th), User Entity Behavior Analytics (UEBA) (27th), Endpoint Detection and Response (EDR) (56th), Security Orchestration Automation and Response (SOAR) (24th), Extended Detection and Response (XDR) (38th), Identity Threat Detection and Response (ITDR) (17th)
 

Mindshare comparison

As of May 2026, in the Network Traffic Analysis (NTA) category, the mindshare of Corelight Open NDR is 7.0%, down from 10.3% compared to the previous year. The mindshare of Stellar Cyber Open XDR is 2.9%, up from 1.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Traffic Analysis (NTA) Mindshare Distribution
ProductMindshare (%)
Corelight Open NDR7.0%
Stellar Cyber Open XDR2.9%
Other90.1%
Network Traffic Analysis (NTA)
 

Featured Reviews

reviewer2834367 - PeerSpot reviewer
Growth And Strategy Lead at a computer software company with 51-200 employees
Network visibility has transformed how we detect nation state threats and protect critical industry
Before Corelight recently started pushing some of the agentic features, querying at times could be a little difficult, depending on your mastery of log scale. However, I think with a lot of the artificial intelligence that they are building in, it is getting a lot easier to query in the platform. I would definitely encourage them to continue down that path where anybody can hop into the platform and start running queries, whether it is a simple instruction like I want this, and an artificial intelligence process can actually build the query and do it. I think that would be super powerful. Cyber skill sets are in high demand, and there is a huge backlog in cyber talent. We cannot fill all the positions we need. The easier we can make these cyber systems for people to pick up and be effective on, I think is really key. Explainability of data is hyper important. In the past few artificial intelligence related updates we have gotten from Corelight, that has been one of the first questions our team has asked every time or that I have asked: show me what the model is doing, show me how it came to this analysis. Within Investigator platform, they are able to walk through and see exactly what data the artificial intelligence pulled from where and why it did what it did as far as making its suggestions. They have definitely built their system with artificial intelligence in mind up front, and having that openness as one of the key features of any of their artificial intelligence and machine learning processes in the platform is important. The issue with black boxes is obviously hallucinations from artificial intelligence and just not being able to trace to ground truth. When we are talking about these cyber incidents and being able to do forensics, you need to be able to pinpoint and tie everything together, and black boxes really obscure that and prevent you from doing so. Corelight has done a really good job of making sure that everything is explainable and everything is mapped when it comes to leveraging any of their artificial intelligence features.
Hrishiraj Bhattacharjee - PeerSpot reviewer
Founder & CEO at Team Karimganj
Correlates incidents, allows for quicker identification and helps prioritize investigations
The only challenge is, and that’s where we come into play, it’s a pretty high-tech platform. So, it’s difficult for small and medium-sized organizations to manage it on their own. It’s a very complex system. It requires a lot of expertise. All my guys who work on it have gone through certification from Stellar itself. There are three different certifications that you need to complete. Only then are you certified by Stellar to work on it. It’s a very complex platform. Not everyone can use it. A simple IT engineer or system admin won’t be able to handle it because it’s quite complex. You need to have an understanding of the industry, the subject, and the tool. So, just purchasing this tool or license and then using it on your own would be very difficult to configure and manage on a day-to-day basis. The pricing model is not suitable for small and medium companies, particularly small companies. The minimum pricing model they have is suitable for companies with more than one thousand users. So, if someone has 50 to 100 users, like typical small companies, it’s difficult for them because the cost involved is high. Stellar would charge you for those thousand users, but you do not need all those users. So what are they going to do? I guess Stellar does not want to target small companies directly and maybe relies on resellers and MSPs like us to sell it. So, that is something I would recommend changing. Otherwise, it’s a great tool, but because of the pricing model, small companies are unable to leverage the advantage of this beautiful tool. So, the pricing model should be suitable for small and medium businesses. The product currently has vulnerability monitoring and everything. But if they could also do something about vulnerability management and maybe patch management, that would be nice.

Quotes from Members

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

Pros

"It is easy to deploy and easy to handle."
"Corelight Open NDR has had a positive impact on my company, providing visibility as the Suricata engine can scan huge volumes of traffic, including north-south and east-west, revealing signatures and exposures I was not expecting and enabling me to catch them with Suricata alerts."
"Our company has seen massive improvements in cybersecurity position for our clients."
"The most valuable feature is the embedded IDS from Suricata."
"It's an easy way for us to get visibility in a client's environment."
"Technical support seems to be good."
"Corelight makes much easier the remediation of cyber attacks; instead of facing a chaotic amount of logs, Corelight provides correlated metrics that allow pivoting to find, in seconds, all the data related to an alert, detection, or asset."
"It's easy to create additional dashboards specific to supporting specific tasks."
"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

"Before Corelight recently started pushing some of the agentic features, querying at times could be a little difficult, depending on your mastery of log scale."
"They can enhance the interface of the product. They can make it more interactive and also easier to use for feature access."
"Machine learning could be a good improvement, but it's very costly."
"Machine learning could be a good improvement, but it's very costly."
"They can enhance the interface of the product. They can make it more interactive and also easier to use for feature access."
"Corelight hasn’t added features in a long time."
"The solution’s architecture is complex and difficult to understand. There are multiple machines and VMs."
"In the next release, building a graphical user interface would be helpful."
"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

"It's a yearly fee and depends on what you are looking for."
"It’s a single license platform."
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Top Industries

By visitors reading reviews
Government
12%
Financial Services Firm
12%
Computer Software Company
8%
Real Estate/Law Firm
8%
Manufacturing Company
13%
Comms Service Provider
10%
Computer Software Company
9%
Financial Services Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise2
Large Enterprise1
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for Corelight?
I have a fortunate experience with pricing, setup costs, and licensing of Corelight Open NDR, as being a principal architect, I get to sit outside of that conversation and just choose the best prod...
What needs improvement with Corelight?
Corelight Open NDR does not need any improvements or additional features in the next releases. The product is excellent at what it does, and I believe what they have done with it, taking an open-so...
What is your primary use case for Corelight?
I have been using Corelight Open NDR solution for approximately three years. I leverage the Suricata engine heavily for alerting on indicators of compromise as my main use case for this solution.
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

Corelight Open NDR
No data available
 

Overview

 

Sample Customers

CarrefourEdnonGrand Canyon EducationSektorCERTTietoevryVolkswagen Financial Services
Sumitomo Chemical USA, PlastiPak Packaging, University of Denver, Large California State Agency, Large Midwestern American City
Find out what your peers are saying about Corelight Open NDR vs. Stellar Cyber Open XDR and other solutions. Updated: April 2026.
895,151 professionals have used our research since 2012.