The "manager" web app can start/stop/restart/remove individual applications in Tomcat. It's installed under
http://localhost:8080/manager/ , but I think (can't quite remember) that it's not enabled by default. Check whether there's a file TOMCAT_HOME/Catalina/localhost/manager.xml
Its documentation
is here.
[ September 13, 2006: Message edited by: Ulf Dittmer ]