PlantUML

Here's a UML diagrammer driven by DSLs. Ran across it linked from the description of another project by its author that used it to document his class diagram. Slick!

UMMF

Man, CPAN has immense treasures in it.  Today's exhibit: UMMF, the UML Meta-Model Framework.  It takes UML output from various expensive tools and generates Perl and/or Java class code.  Very neat!

UML

I always figured UML would be interesting to look at in more detail, and once I even bought a book. (UML has been around so long I still had the habit of buying a book to learn about it, back then.) But ultimately, every time I look hard, it seems to be Much Ado about Nothing - or at least a little too much ado about Java class definitions.

But here comes an interesting blog post Wiki page from a couple years back talking about some kind of wacky pseudocode UML description language that could compile into pictures or something - look at it! Significant indentation! Great minds, apparently.

The graphics tools he's talking about there are collectively UmlGraph, which I ran across Googling on the word "declarative". You find the most interesting things trawling on some keywords.

Anyway. I already mentioned UML back in the first days of this blog as one of those systems that is "kind of like, but not" what I want to do. Its semantics, though, are intriguing. UML as a set of semantics for sketching solutions is a good intuition.

UML

UML (Unified Modeling Language) provides a set of tools to specify the context and basic concepts of a software system. Again: good start.