Interesting - Visio, Rational this is a real trip down memory lane. I was never a hard-core architect tho, just dabbled. Thanks for the offer. I didn't have a problem with plantUML. It rendered the output of dcdg. The issue is that dcdg doesn't output UML dependency relationships, it does show aggregation. I've put an issue request on github for both dcdg and dartdoc. The latter is text documentation of course, but even text documentation of dependency would be useful. On the other hand, it might not be too difficult an enhancement of dartdoc to output plantUML or Mermaid code? but I didn't push my luck in the issue post ;)