As of now, the binary distribution of XTS provides the following classes in jbossxts.sar:
org.jboss.jbossts.XTSService
org.jboss.jbossts.XTSServiceMBean
org.jboss.jbossts.initialisation.*
org.jboss.jbossts.logging.*

As discussed in the forum, in order to make XTS easily deployable outside JBossAS it would be convenient to move these classes into one of the already existing JARs (jbossxts-api.jar?) or in a new one (jbossxts-service.jar?). Then, this JAR should be included in the SAR, if it's not already.

In this way, the SAR would become just a facility to deploy XTS in JBossAS, but the user could deploy it also on another application server (Tomcat for instance) just by deploying the XTS JARs and providing the necessary configuration wiring.