Drools Expert is the rule engine and Drools Fusion does complex event processing (CEP).
'org.drools:drools:6.3.0.Beta2'
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools</artifactId>
<version>6.3.0.Beta2</version>
</dependency>
<dependency org="org.drools" name="drools" rev="6.3.0.Beta2"/>
"org.drools", "drools", "6.3.0.Beta2"