[itsArtur]

I like the C4 model because it forces me to think about the right level of abstraction for the diagram's audience. It also has very few core building blocks and thus is very easy to learn. I just wish the tooling around it was better :)

[victor96]

We're currently working on tooling at http://icepanel.io which supports the C4 model. Please reach out to us if you'd like to chat about this, we'd love to hear your thoughts.

[Hypergraphe]

Hi, there are several draw.io plugins available on github do use C4 in draw.io if you are not already aware of this.

[NicoJuicy]

PlantUML had support for c4