I just discovered that there are so many of those. Here is a list supported by asciidoctor as an extension: https://asciidoctor.org/docs/asciidoctor-diagram/

Mairmaid looks nice

I guess it was done on purpose, but essentially it reminds me of the syntax for graphviz: https://graphviz.org/

This was my first thought as well. I use graphviz quite a lot for these sorts of diagrams, and I really like it. Their site, reference materials, etc. need updating though.

I use it too but I wouldn't mind a non-ugly layout renderer!

There's an interesting art to knowing when neato or twopi are better choices than dot for layout rendering. Graphviz is interesting because there are multiple layout renderers and "non-ugly" is a graph-by-graph art form between the different renderers and different renderer hints in the graph file (spring constants and what-have-you).

I've had some successes and a lot of failures over the years.

Wow thanks for this, never heard of it before despite years of searching for a plantuml replacement!

@flarg, just curious, why do you need a Plant UML replacement? I just used it to make a bunch of séquence diagrams, component diagrams and wireframes :)

They keep doing crazy things like the recent Covid alert, who knows what else they put in their code base. They've lost my trust.

This is fantastic, thanks for sharing. Worthy of its own submission IMHO

Having said that, I really wish this was available as a library rather than just a website and a desktop app, but I suppose the best things in life aren't free

Woooow also nice!!

I will try it out! I have a use case for this that has thousands, will try both tools out to see if I get better results than with my current d3 script that I found laying around on the internet.

Wow, this is an amazing tool. Great, succinct docs as well.

(It seems like 'Mind Map' referred to by the OP is just the Horizontal Tree Layout of this tool.)

This will save me so much time next semester. As someone who types their notes for ease of search and quality, this will be a game changer.

This tool looks really great. Thanks for sharing!