free java chat servers

[Madhu GM]

Hi All,

For a customer I have to include the chat application in thier website. I am looking for an free java chat application which i can customise to the client requirement. I found that babylon java chat (babylon) is a good choice. Please let me know if you know any other good application.
If the chat application supports the multilanguage ( unicode) it would be great.

Thanks and regards,
Madhu