Aside from Moose for Perl object-oriented programming, there is also a Moose for the analysis of software. There's a book as well. Moose appears to be about the model-based facilitation of software engineering, especially in the research arena. It's Swiss, meaning that there is this FrancoGerman assumption of underlying ontologies I find nearly incomprehensible, but they appear to be doing a lot of things I want to understand as well.
So I should come back to it. Sometime when I can grok what meta-meta-modelling is supposed to be about.