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Graylog Enterprise vs Mezmo comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 14, 2025

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

Graylog Enterprise
Ranking in Log Management
9th
Average Rating
8.0
Reviews Sentiment
6.1
Number of Reviews
22
Ranking in other categories
No ranking in other categories
Mezmo
Ranking in Log Management
55th
Average Rating
9.0
Number of Reviews
2
Ranking in other categories
Application Performance Monitoring (APM) and Observability (75th), Observability Pipeline Software (7th)
 

Mindshare comparison

As of January 2026, in the Log Management category, the mindshare of Graylog Enterprise is 5.0%, down from 6.2% compared to the previous year. The mindshare of Mezmo is 0.5%, up from 0.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Log Management Market Share Distribution
ProductMarket Share (%)
Graylog Enterprise5.0%
Mezmo0.5%
Other94.5%
Log Management
 

Featured Reviews

reviewer2704128 - PeerSpot reviewer
Head of Cyber Security & CTO at a tech services company with 51-200 employees
Robust event correlation enhances operations, yet integration scope can broaden for seamless data handling
The features and capabilities of Graylog that we have found most valuable are related to its basis on open search, which was ElasticSearch. We appreciate being able to integrate custom feeds and do custom parsers, and to be able to do some of the correlation on it. That all works effectively. 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. We use it for investigating problems and problem management. We throw all the information at it, we have it alerting for certain conditions, but generally we use it for deep diving into issues as needed.
TO
President and Founder at STILLWATER SUPERCOMPUTING INC
It consolidates all logs into one place and provides required features and functionalities
Every once in a while, our IBM cloud operational implementation gets behind. Sometimes, when we have a customer event, we do not get access to the latest logs for about 30 minutes, particularly for the sites that are heavily utilized. This is clearly not good. It is impossible to do RCA when you can't look at the logs that pertain to the time period in which the event occurred. It could be more of an operational problem than a feature problem. I don't have visibility about whether it is a LogDNA issue or just an operational issue.

Quotes from Members

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

Pros

"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."
"It has data adapters and lookup tables that utilize HTTP calls to APIs."
"The product is scalable. The solution is stable."
"I like the correlation and the alerting."
"Storing logs in Elasticsearch means log retrieval is extremely fast, and full text search is available by default."
"The solution's most valuable feature is its new interface."
"I am very proud of how very stable the solution is."
"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."
"LogDNA consolidates all logs into one place, which is super valuable."
"The solution aggregates all event streams, so that if there are any issues, it's all in the same interface."
 

Cons

"More customization is always useful."
"With technical support, you are on your own without an enterprise license."
"Graylog can improve the index rotation as it's quite a complex solution."
"I would like to see a date and time in the Graylog Grok patterns so that I can save time when searching for a log. I like how the streams and the search query work, but adding a date and time will allow me to pull out a log in a milli-second."
"Dashboards, stream alerts and parsing could be improved."
"Its scalability gets complicated when we have to update or edit multiple nodes."
"The biggest problem is the collector application, as we wanted to avoid using Graylog Collector Sidecar due to its architecture."
"More complex visualizations and the ability to execute custom Elasticsearch queries would be great."
"No ability to encapsulate a query or a filter, and communicate or share that among the team."
"Every once in a while, our IBM cloud operational implementation gets behind. Sometimes, when we have a customer event, we do not get access to the latest logs for about 30 minutes, particularly for the sites that are heavily utilized. This is clearly not good. It is impossible to RCA when you can't look at the logs that pertain to the time period in which the event occurred. It could be more of an operational problem than a feature problem. I don't have visibility about whether it is a LogDNA issue or just an operational issue."
 

Pricing and Cost Advice

"Consider Enterprise support if you have atypical needs or setup requirements.​"
"​You get a lot out-of-the-box with the non-enterprise version, so give it a try first."
"It's an open-source solution that can be used free of charge."
"Graylog is a free open-source solution. The free version has a capacity limitation of 2 GB daily, if you want to go above this you have to purchase a license."
"If you want something that works and do not have the money for Splunk or QRadar, take Graylog.​​"
"We are using the free version of the product. However, the paid version is expensive."
"I use the free version of Graylog."
"We're using the Community edition."
Information not available
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Comms Service Provider
10%
University
8%
Government
8%
Transportation Company
26%
Comms Service Provider
13%
Manufacturing Company
6%
Legal Firm
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise5
Large Enterprise8
No data available
 

Questions from the Community

What do you like most about Graylog?
The product is scalable. The solution is stable.
What is your experience regarding pricing and costs for Graylog?
I am not familiar with the pricing details of Graylog, as I was not responsible for that aspect. It was determined that we didn't need an enterprise plan, which is more suited for clients with less...
What needs improvement with Graylog?
An improvement I would suggest is in Graylog's user interface, such as allowing for font size adjustments. A potential enhancement could be the integration with Ollama to run large language models ...
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Also Known As

Graylog2
LogDNA
 

Overview

 

Sample Customers

Blue Cross Blue Shield, eBay, Cisco, LinkedIn, SAP, King.com, Twilio, Deutsche Presse-Agentur
Instacart, Asics, Lime, Salesforce
Find out what your peers are saying about Graylog Enterprise vs. Mezmo and other solutions. Updated: December 2025.
879,425 professionals have used our research since 2012.