@pat the cat
MUI Builder was and is a buggy GUI Builder for the MUI libraries. Also, MUI contains resource allocation code as well so it was intended to simplify but not replace coding.
BOOPSI implements a plugin system for Intuition. For another example, look at AmigaOS 3.5 or 3.9. They both come with a lighter weight BOOPSI implementation called React that was based the earlier ClassAct code.
