To google for "weblogic oracle linux support matrix", etc. might be a good start.
OEL is basically RHEL. So JBoss will run. Weblogic (Oracle product) should be available. Apache 2 is available (straight Apache, or OHS Apache from Oracle). No reason why Tomcat will not run. (we are running OHS, JBoss and Tomcat on OEL servers).
The question is - what are your requirements? Does this include app server/web server support?