Perhaps one of these? - https://knsv.github.io/mermaid/ https://knsv.github.io/mermaid/ - http://flowchart.js.org http://flowchart.js.org - https://code2flow.c

Perhaps one of these? - https://knsv.github.io/mermaid/ https://knsv.github.io/mermaid/ - http://flowchart.js.org http://flowchart.js.org - https://code2flow.com/app https://code2flow.com/app (non-markdown dsl)