Hello!
I have found some old thread regarding running ArmyBuilder on MacOS here which is too old to bump:
THREAD
It happens that I am working on a similar in its purposes open source project.
It can be used for any tabletop wargaming system:
http://ace.armycalc.com/
I do not own a Mac and I don't know how to build MacOS packages, but there are sources from Qt Creator available and I am looking for someone with some development experience who might be interested in building it.
I know that ArmyBuilder is the kind of software without replacement and its keeping a lot of tabletop wargamers from switching from 'default OS'. So maybe this will be a good thing to do.
I will be glad to answer any questions and help building it, if someone is interested.
regards