OW2 spec is used to be able to customize some specification with OSGi stuff for example
'org.ow2.spec:parent:1.0.13'
<dependency>
<groupId>org.ow2.spec</groupId>
<artifactId>parent</artifactId>
<version>1.0.13</version>
</dependency>
<dependency org="org.ow2.spec" name="parent" rev="1.0.13"/>
"org.ow2.spec", "parent", "1.0.13"