If you are interested in Java ES Interoperability, check out this wiki: http://wikis.sun.com/display/Interoperability/Java+ES+Interoperability
It's not about G11n, but still very interesting for Java ES. Check out as well some technical tips:
- LDAP Directory Server
- Glassfish
- Web Space/Portal Server
- GlassFishESB/Java CAPS
- OpenSSO/Access Manager