Does anybody know (and have experience with) some good and stable OpenSource tools competitive with buyable software like:
- BEA WebLogic Portal Server
- IBM WebSphere Portal Server
- BEA WebLogic Integration
- IBM WSAD Integration Edition (right name???)

I need to make an offer compatible to the BEA products - maybe on top of BEA WebLogic Server, maybe another J2EE AppServer like JBoss.

Thanks in advance.

Best regards
Glenn Petersen, Denmark