Application Server Software For Fedora 10/11/CentOS

[Robert L Cochran]

I'm interested in setting up a Fedora system as an application server so 
that it works like/has features similar to IBM's WebSphere Application 
Server. I can't afford IBM's licensing costs. Is there an open source 
application server that works more or less the same and will run on 
either Fedora 10 or 11 or CentOS?

Thanks

Bob Cochran