I'm working on a Java-based OOTP add-on that will offer the features of Catobase and BOSI, along with a few other nice things. Take a look at our website, and feel free to contribute suggestions to our forums:
http://ootpj.sourceforge.net
OOTPJ is currently still under development and no releases have been made yet, so now is a good time to get in your suggestions.
Tim