This is deprecated with last versions, for instance the appserver component has been moved first from framework to specialpurpose and then recently to OFBiz Attic#Appserver

 

Here is a list of related documents. By and large, you may have a look into framework/appserver or specialpurpose/appserver to choice your server if it's there...

Deploying OFBiz 9.04 on JBoss 5.1.0

Geronimo & IBM Websphere Application

Glassfish v2.1

JBoss 4.2.2

Tomcat