Apache Pluto is the Reference Implementation of the Java Portlet Specification.
'org.apache.portals.pluto:pluto:2.1.0-M3'
<dependency>
<groupId>org.apache.portals.pluto</groupId>
<artifactId>pluto</artifactId>
<version>2.1.0-M3</version>
</dependency>
<dependency org="org.apache.portals.pluto" name="pluto" rev="2.1.0-M3"/>
"org.apache.portals.pluto", "pluto", "2.1.0-M3"