Graylog Reviews, Ratings & Features 2026 | Gartner Peer Insights

Security information and event management (SIEM) is a configurable system of record that collects, aggregates and analyzes security event data from on-premises and cloud environments. SIEM processes security event data for the purposes of threat detection, investigation and response. It natively supports data normalization and offers user-configurable detection content and reporting to orchestrate threat mitigation and satisfy compliance requirements. These solutions are delivered via a SaaS platform or client-hosted on-premises or private cloud. The security information and event management (SIEM) system must assist with: 1. Aggregating and normalizing data from various IT and operational technology (OT) environments. 2. Designing and executing near real-time monitoring and alerting content. 3. Enriching and investigating security events of interest. 4. Supporting manual and automated response actions. 5. Maintaining and reporting on current and historical event data.

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Security Information and Event Management

Graylog

Vp, Engineering

We have been using Graylog Community edition since 2018. Since then our experience with Graylog has been excellent. It has significantly simplified the process of monitoring and analyzing logs across multiple servers. The intuitive interface and powerful search capabilities make troubleshooting and log analysis faster and more efficient. 
For example, we use Graylog to keep track of all Active Directory changes and replaced our old fashioned email reports. Also, determining the source of an account lockout has never been easier. Which saves us a lot of time compared to diving into log files on our several domain controllers on different sites. We even created a PowerShell script that calls the Graylog API to get the results even faster. We currently stream logs from Cisco Switches, Routers, ASA, FTD and ISE as well as our Microsoft Print server and VMWare ESXi nodes. 
Key highlights for us are:
- Centralized Log Management: View logs from different servers and appliances.
- Dashboards and metrics: The dashboards provide real-time insights into critical metrics, such as Active Directory logins for service accounts. This helps us stay proactive and maintain security compliance like ISO 27001 and NIS2.
- Error resolution: Graylog has been instrumental in diagnosing and resolving transient errors when querying AD in various PowerShell Scripts. This has improved the reliability of our automation processes.
- Log forwarder to our SIEM: Since our externally managed SIEM does not require all logs generated by our firewalls (FTD/ASA), we use Graylog to selectively filter and forward only the security-relevant messages to our SOC.

We highly recommend it for organizations seeking a centralized and scalable logging solution.

<50M USD

50M - 250M USD

Gov't/PS/ED <5,000 Employees

250M - 500M USD

1B - 3B USD

500M - 1B USD

Gov't/PS/ED 5,000 - 50,000 Employees

3B - 10B USD

30B + USD

10B - 30B USD

Manager of IT Services

dashboard 內容容易操作，對於一般IT人員都能夠自行調整。
但是對於建立input, stream, index等設定及流程時，不夠清楚的讓人知道應該做什麼。
部分doc的說明不清晰、模稜兩可

The dashboard content is easy to operate, and most IT personnel can adjust it themselves.

However, when setting up inputs, streams, indexes, and processes, it's not clear enough what should be done.

Some documentation is unclear and ambiguous.

It Associate

Graylog is a nice service to gather & aggregate relatively large amounts of logs for debugging, operational, and security purposes. In my experience, Graylog works well for this. I wouldn't recommend it (the free version) however to people looking for a plug&play SIEM in a box.

For instance: while it is possible to configure dashboards and alerts, it doesn't know about vulnerabilities out of the box.

Graylog has nice visualization options, but these have their limits. If you want to make advanced dashboards you might want to combine it with an external graphing tool. This is also advisable if you want to combine logs & metric data: while you can store metrics in Graylog, I wouldn't recommend it and instead limit Graylog to actual logs.

It does use its own query language, but this isn't too complicated and the web interface makes it easy to build a query by including and excluding properties of shown logs, without having to know the query language by heart.

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Deployed in over 50,000 installations worldwide, Graylog captures, stores, and analyzes terabytes of machine data in real-time to detect threats faster, investigate issues efficiently, and simplify compliance—without drowning in noise. Graylog delivers an affordable, flexible architecture that meets the evolving needs of IT and security teams—whether hosted by us, on-premises, or in your cloud. Started as an open-source project, it has grown into a platform offering SIEM, API Security, and Enterprise Log Management with built-in SOAR capabilities to automate and accelerate response. Graylog’s machine learning, real-time monitoring, and AI-assisted investigation tools streamline workflows, reduce alert fatigue, and optimize security operations. With a vision of a secure digital world, we provide threat detection and response that delivers a strong analyst experience while maintaining cost efficiency, ensuring organizations stay ahead of ever-evolving cyber threats.

Graylog: Empowering Threat Detection & Incident Response Solutions with Cutting-Edge Technology

At Graylog, we specialize in delivering top-notch Threat Detection & Incident Response (TDIR) solutions, backed by our latest addition, the API Security platform. As a renowned centralized log management and SIEM (Security Information Event Management) provider, we offer unparalleled fast and efficient log analysis capabilities in critical areas such as security, compliance, operations, and DevOps.

Our enterprise solution empowers organizations worldwide to capture, store, and analyze terabytes of machine data in near-real time. With our open project, deployed in over 50,000 installations globally, individuals and small teams can access basic log consolidation, analysis, and search functions at no cost.

Partner with Graylog for unmatched TDIR solutions and harness the power of our advanced technology to stay ahead of evolving threats and swiftly respond to incidents. Together, we can safeguard your organization's security, integrity, and resilience.

Specialties:
API Security, Log Management, Monitoring, Devops, DevSecOps, Cybersecurity, MSP, MSSP, Compliance & Audit, Anomaly Detection, SIEM, Security Operations, Security Analytics, Log Analysis, IT Operations, Cloud Security, Threat Hunting, Threat Detection, Incident Response, and Alerting


Graylog, Inc.

Deployed in more than 50,000 installations worldwide, Graylog is a log management and SIEM solution built to open standards for capturing, storing, and enabling real-time analysis of terabytes of machine data. Graylog makes analysis ridiculously fast and efficient using a cost-effective and flexible architecture. Graylog began as an open source project. As time marched on and new IT and Security challenges emerged, the strong foundation and flexibility of the Graylog platform have made it ideal for today’s diverse enterprise needs and environments. We continue to improve Graylog to ensure IT and Security professionals who use it every day have what they need to succeed and meet evolving needs.

Reviews

Ratings Overview

Overall experience with

Favorable Review

Graylog Offers Effective Log Aggregation, But Has Steep Configuration Learning Curve

Critical Review

The lack of an SNMP trap when integrating specific devices causes difficulties in application.

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