Common java related to web server software:
WebLogic * : the Oracle Corporation, a large JavaEE server, supports all the JavaEE specification, for a fee.
Websphere * : IBM Corporation, a large JavaEE server, supports all the JavaEE specification, for a fee.
JBOSS * : JBOSS company's large JavaEE server, supports all the JavaEE specification, for a fee.
Tomcat * : the Apache Fund, small and medium JavaEE server, supports only a small number of JavaEE specification.