Project Summary
Graylog2 is an open source syslog implementation that stores your logs in MongoDB. It consists of a server written in Java that accepts your syslog messages via TCP or UDP and stores it in the database. The second part is a Ruby on Rails web interface that allows you to view the log messages. It also implements GELF. The Graylog Extended Log Format is a simple JSON string that allows you to send long and structured syslog messages and very useful for customized application log monitoring.
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In a Nutshell, Graylog2...
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has a well established, mature codebase
maintained by a very large development team
with increasing Y-O-Y commits -
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took an estimated 181 years of effort (COCOMO model)
starting with its first commit in May, 2010
ending with its most recent commit about 18 hours ago
GNU General Public License v3.0 or later
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Use Patent Claims
Forbidden
Sub-License
Hold Liable
Required
Distribute Original
Disclose Source
Include Copyright
State Changes
Include License
Include Install Instructions
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
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30 Day SummaryJan 20 2026 — Feb 19 2026
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12 Month SummaryFeb 19 2025 — Feb 19 2026
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