Tony,
There are others, but I have listed the main contenders. For our purposes we could make do with any of them, but each one requires a different amount of work to adapt it to our environment. Possibly Cacao has the greatest promise, since it has recent releases and one of the OS4 developers claims to have ported it already. He has said that he is working on the GTK part at the moment. He made that announcement back in April, and I exchanged a couple of emails with him, but recently he has gone quiet and must be busy. A GTK port has even made it to aw.net with a MUI engine:
http://amigaworld.net/modules/newbb/viewtopic.php?topic_id=18978&forum=3...
I have sent a couple of emails asking the OS4 dev if he would allow his name to be quoted, but without result, so I can't name him just yet. I also asked if he would share his work with us or even join the team, again, no reply.
OK thanks, it looks like Cacao may be the one to go with unless anyone else has any objections, I would ask you just to double check the Java requirements of OO.org as I was under the impression that the DB in OO.org 2.0 absolutely required Java, if not good, however its worth checking.
All this considered, please continue in your efforts to contact the OS4 dev who has/is porting Cacao (possibly Hans-Joerg or Thomas can help there) and see how far they have gotten and what help they need, then provide said help please.
Mark