jboss-client.jar is a combined client jar for JBoss AS7, for use in non-maven environments. This jar should be used with standalone clients only, not with deployments are that deployed to an AS7 instance. This jar contains the classes required for remote JMS and EJB usage, and consists of the following shaded artifacts: org.jboss.spec.javax.jms:jboss-jms-api_1.1_spec org.jboss.spec.javax.transaction:jboss-transaction-api_1.1_spec org.jboss.spec.javax.ejb:jboss-ejb-api_3.1_spec org.jboss:jboss-ejb-client org.jboss:jboss-remote-naming org.jboss.logging:jboss-logging org.jboss.marshalling:jboss-marshalling org.jboss.marshalling:jboss-marshalling-river org.jboss.remoting3:jboss-remoting org.jboss.remoting3:remoting-jmx org.jboss.sasl:jboss-sasl org.jboss.xnio:xnio-api org.jboss.xnio:xnio-nio org.jboss.netty:netty org.hornetq:hornetq-core-client org.hornetq:hornetq-jms-client Maven users should not use this jar, but should use the following BOM dependencies instead org.jboss.as jboss-as-ejb-client-bom pom org.jboss.as jboss-as-jms-client-bom pom This is because using maven with a shaded jar has a very high chance of causing class version conflicts, which is why we do not publish this jar to the maven repository.