GELF implementation in Java and log4j appender without any dependencies.
'com.mangofactory:org.graylog2.gelfj:1.0.2'
<dependency>
<groupId>com.mangofactory</groupId>
<artifactId>org.graylog2.gelfj</artifactId>
<version>1.0.2</version>
</dependency>
<dependency org="com.mangofactory" name="org.graylog2.gelfj" rev="1.0.2"/>
"com.mangofactory", "org.graylog2.gelfj", "1.0.2"