https://github.com/mingrammer/diagrams

I'm an extensive user of PlantUML and Ditaa packages for org-mode. One
thing that is lacking is the ability to do simple Architecture Diagrams
with templated icons.

*Diagrams* fills that gap. Although I wish it was made more DSL/Declarative
like Plantuml.

But still a source block literate programming option would make it
immensely useful