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Graylog Enterprise vs LogRhythm SIEM vs Splunk Enterprise Security comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

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

Mindshare comparison

As of May 2026, in the Log Management category, the mindshare of Graylog Enterprise is 3.1%, down from 6.7% compared to the previous year. The mindshare of LogRhythm SIEM is 2.8%, up from 2.1% compared to the previous year. The mindshare of Splunk Enterprise Security is 6.8%, down from 7.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Log Management Mindshare Distribution
ProductMindshare (%)
Splunk Enterprise Security6.8%
Graylog Enterprise3.1%
LogRhythm SIEM2.8%
Other87.3%
Log Management
 

Featured Reviews

NC
Security Officer at JSC "Moldtelecom" S.A.
Log analysis has become clearer and faster but visualization and extensibility still need work
The problem was with the complexity and the cost to add extensions. We found this very expensive to buy another version with additional features. I think that Graylog Enterprise does not have customizable dashboards. I did not see them in Graylog Enterprise because most of the time we used the open source free version, which is limited. I think Graylog Enterprise should improve some things that they have in the paid version and perhaps provide users with a menu that gives examples of parsing logs and draws graphics so that people do not need to improve another system such as Grafana. This would be interesting. When it comes to functionalities, I found the log management in Graylog Enterprise acceptable. It is very simple to use and to collect logs. It has support for different protocols and different ports, and the sidecar is easy to use. However, in visualization, I think it needs to be much better.
SumitKumar20 - PeerSpot reviewer
Security Engineer at Granicus Inc.
Tool consistently aids in effective threat detection and monitoring but could benefit from improved log source management and resource optimization
One major area for improvement in LogRhythm SIEM is the lack of volume measurement capability in terms of storage. There is currently no way to determine how much data is being consumed in terms of gigabytes, terabytes, or petabytes from particular devices or environments. This information is crucial for planning future storage needs and scalability. The system monitor (collector) agent has issues with resource consumption. Even when not actively collecting data, the agent continues to consume significant CPU and memory resources, which can be particularly problematic for small business environments with limited resources. LogRhythm SIEM could improve by adding more default device support. While they have good default settings for devices such as Palo Alto firewalls, custom log sources often require extensive work. Increasing the number of supported devices with built-in policies and functionality would reduce the need for custom work. Competitive SIEM tools often provide more comprehensive coverage for various devices and vendors.
Sathis-Kumar - PeerSpot reviewer
Senior Manager at Bank of America
Helps us detect cyber threats quickly and integrate multiple feeds effectively
Overall, the product is good, but when it comes to some infrastructure issues, we have to dig into more logs. There is no straightforward indication of an issue. Health check kind of dashboards are not available. More AI would help us, and more optimization, since security products run more queries. The AI module could suggest solutions, optimizing queries or workload balancing. If the product itself advises on running queries during peak times, it would be similar to what ChatGPT currently offers. We see quite a few issues on stability. Even last week, we faced something, and identifying bottlenecks is not easy. We need more SMEs, and there is no mechanism to tell us about indexer or search head issues. Self-monitoring dashboards could be beneficial. The technical support still requires more improvement. Often, primary support takes a lot of time and forwards most solutions to the engineering side. The primary support team has very limited knowledge to provide.

Quotes from Members

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

Pros

"Message forwarding through the in-built module."
"The Graylog features that have proven to be most beneficial for our data analysis in particular are that we tend to use it as a big data store, so we have the correlation rules that, if something matches under certain conditions, it raises an alarm."
"Real-time UDP/GELF logging and full text-based searching."
"I am very proud of how very stable the solution is."
"Storing logs in Elasticsearch means log retrieval is extremely fast, and full text search is available by default."
"UDP is a fast and lightweight protocol, perfect for sending large volumes of logs with minimal overhead."
"What I like about Graylog is that it's real-time and you have access to the raw data. So, you ingest it, and you have access to every message and every data item you ingest. You can then build analytics on top of that. You can look at the raw data, and you can do some volumetric estimations, such as how big traffic you have, how many messages of data of a type you have, etc."
"This has increased productivity for the dev and support teams, because we are directly notifying them."
"LogRhythm is scalable, it's robust, they're constantly growing it, their tech support is good, their Professional Services are good."
"Mostly for us the most valuable feature is its aggregation of all the logs into a single platform, and then doing the real-time monitoring based on that."
"Technical support is very helpful and responsive."
"LogRhythm allows our IT/IS teams to quickly identify issues across the enterprise."
"From a performance standpoint, I have no problems recommending LogRhythm because it allows me to get in under the hood and tweak some things."
"It's just amazing, that you can get the information, especially the AIE information, where it correlates different logs together."
"The user interface is good."
"For the same price, we have been able to go from a SIEM that could only manage about 20 percent of our environment to a full 100 percent coverage of all the devices on our network."
"The solution has plenty of features that are good."
"Splunk's support is better, and its reporting is easier and better."
"The incident review in Splunk Enterprise Security seems to be the most helpful feature."
"Splunk is a user-friendly solution."
"Splunk's strongest suit is its user interface. We can integrate multiple solutions and adjust settings in the Splunk interface."
"Splunk simplifies the information, and it gives you charts and different means of seeing that information, making it easily understandable for people."
"The solution's most valuable feature is threat intelligence correlations."
"Splunk has give us the capability to easily track problems and their status."
 

Cons

"Dashboards, stream alerts and parsing could be improved."
"I would like to see a default dashboard widget that shows the topology of the clusters defined for the graylog install."
"The documentation for Graylog Enterprise can be improved, as this has been a pain point."
"I wouldn't recommend the enterprise version, but as an open source solution, it is solid and works really well."
"Graylog needs to improve their authentication. Also, the fact that Graylog displays logs from the top down is just ridiculous."
"The problem was with the complexity and the cost to add extensions."
"There are many other applications in the market that influenced my rating reduction."
"Graylog could improve the process of creating rules. We have to create them manually by doing parses and applying them. Other SIEM solutions have basic rules and you can create and get more events of interest."
"Sometimes, the tool fails to get the correlated events that triggered the alerts."
"Technical support could use a little work in the terms of responding back. The feedback that we received is they do need a little more staff."
"The ability to customize certain features of the product."
"The Client Console is very bad."
"In terms of blind spots, we are looking for more improvements since we don't have visibility over everything."
"The system monitor (collector) agent has issues with resource consumption. Even when not actively collecting data, the agent continues to consume significant CPU and memory resources, which can be particularly problematic for small business environments with limited resources."
"I think there were a couple of years in the very beginning when I was a little frustrated with them, but now, and especially, we just bought a new box last year, the newer version, it seems to have a lot of the kinks worked out, and so I wouldn't have any problem recommending them."
"Stability is not great but I think that's our issue."
"There are a lot of competitive products that are doing better than what Splunk is doing on the analytics side."
"The product was designed for security and IT with business intelligence needs, such as PDF exporting, but this has not been the highest priority. While the functionality is there, it could be developed more."
"For us, the area that Splunk Enterprise Security can improve is performance optimization."
"When you get into large amounts of data, Splunk can get pretty slow. This is the same on-premise or AWS, it doesn't matter. The way that they handle large data sets could be improved."
"The solution is expensive."
"Splunk Enterprise Security would benefit from a more robust rule engine to reduce false positives."
"The UI can be improved. Dashboards and reports can be better in terms of graphics."
"In the next release, they should include machine learning-based rules that would streamline the process of finding anomalies."
 

Pricing and Cost Advice

"​You get a lot out-of-the-box with the non-enterprise version, so give it a try first."
"If you want something that works and do not have the money for Splunk or QRadar, take Graylog.​​"
"Consider Enterprise support if you have atypical needs or setup requirements.​"
"Having paid official support is wise for projects."
"It's open source and free. They have a paid version, but we never looked into that because we never needed the features of the paid version."
"There is an open source version and an enterprise version. I wouldn't recommend the enterprise version, but as an open source solution, it is solid and works really well."
"We are using the free version of the product. However, the paid version is expensive."
"I use the free version of Graylog."
"We have seen a measurable decrease in the mean time to detect and respond to threats. As it comes out new features and new releases, the window is becoming a lot narrower because you can pivot a lot more with the data. Therefore, the new features and enhancements are reducing that."
"Everything is expensive with LogRhythm, and you don't get anything for free."
"NextGen SIEM's pricing is moderate."
"LogRhythm's licensing is based on MPS. There are some add-on features like advanced UEBA, the cloud component for advanced UEBA, and SIEM."
"When it comes time to renew, they say, "This is what you are using. This is what we can do for you." So, they work with you on pricing."
"In comparison to the competition, they are more affordable. This allows us to do more with less."
"Look for whatever will give you the most value. That's the main point. It is not one size fits all."
"I give the price a six out of ten."
"Truly evaluate the data you want to ingest and go slow. Pulling in data that can provide no use to your mission only wastes data against your license."
"Splunk has always been on the expensive side."
"I think that most of the monitoring solutions are expensive."
"Our customers often complain that the price of Splunk is too high."
"Splunk Enterprise Security is expensive."
"The price of Splunk Enterprise Security is reasonable, falling somewhere in the middle range."
"Splunk is really expensive."
"Personnel costs are saved by not having to involve the domain developers from multiple teams when tracing a problem that spans multiple platforms."
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Comparison Review

VS
Manager, Enterprise Risk Consulting at a tech company with 1,001-5,000 employees
Feb 26, 2015
HP ArcSight vs. IBM QRadar vs. ​McAfee Nitro vs. Splunk vs. RSA Security vs. LogRhythm
We at Infosecnirvana.com have done several posts on SIEM. After the Dummies Guide on SIEM, we are following it up with a SIEM Product Comparison – 101 deck. So, here it is for your viewing pleasure. Let me know what you think by posting your comments below. The key products compared here are…
 

Top Industries

By visitors reading reviews
Computer Software Company
12%
Comms Service Provider
11%
University
8%
Financial Services Firm
7%
Financial Services Firm
10%
Construction Company
9%
Computer Software Company
8%
Comms Service Provider
8%
Financial Services Firm
14%
Manufacturing Company
9%
Computer Software Company
8%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise5
Large Enterprise11
By reviewers
Company SizeCount
Small Business38
Midsize Enterprise39
Large Enterprise83
By reviewers
Company SizeCount
Small Business123
Midsize Enterprise51
Large Enterprise271
 

Questions from the Community

What is your experience regarding pricing and costs for Graylog?
I am not sure about the pricing, setup cost, and licensing because that was dealt with by a different team that handl...
What needs improvement with Graylog?
The documentation for Graylog Enterprise can be improved, as this has been a pain point. I think the visualization as...
What is your primary use case for Graylog?
I remember using Graylog Enterprise in the past at a software house where we used it for logging. During that time, w...
What is the difference between log management and SIEM?
Rony, Daniel's answer is right on the money. There are many solutions for each in the market, a lot depends upon you...
What needs improvement with LogRhythm NextGen SIEM?
LogRhythm SIEM could learn from Wazuh, as Wazuh has a built-in mechanism that allows you to write custom scripting an...
What is your experience regarding pricing and costs for LogRhythm SIEM?
I find LogRhythm SIEM affordable, as it is a bit less costly than QRadar, although I have not been involved in negoti...
What SOC product do you recommend?
For tools I’d recommend: -SIEM- LogRhythm -SOAR- Palo Alto XSOAR Doing commercial w/o both (or at least an XDR) is a...
What is a better choice, Splunk or Azure Sentinel?
It would really depend on (1) which logs you need to ingest and (2) what are your use cases Splunk is easy for ingest...
How does Splunk compare with Azure Monitor?
Splunk handles a high amount of data very well. We use Splunk to capture information and as an aggregator for monitor...
 

Also Known As

Graylog2
LogRhythm NextGen SIEM, LogRhythm, LogRhythm Threat Lifecycle Management, LogRhythm TLM
No data available
 

Overview

 

Sample Customers

Blue Cross Blue Shield, eBay, Cisco, LinkedIn, SAP, King.com, Twilio, Deutsche Presse-Agentur
Macy's, NASA, Fujitsu, US Air Force, EY, Abbott, HD Supply, SAB Miller, UCLA, Raytheon, Amtrak, Cargill
Splunk has more than 7,000 customers spread across over 90 countries. These customers include Telenor, UniCredit, ideeli, McKenney's, Tesco, and SurveyMonkey.
Find out what your peers are saying about Splunk, Wazuh, Cribl and others in Log Management. Updated: May 2026.
896,298 professionals have used our research since 2012.