what's the native linux alternative? aka not a webapp
edit: hm, maybe https://github.com/nkh/P5-App-Asciio
edit: hm, maybe https://github.com/nkh/P5-App-Asciio
While finding the Github, I see they now actually package an Electron application, so that is probably worth exploring[2].
The tool is quite basic, until you realize, you can create reusable blocks (in scratchpad) with predifened style.
From that point on you just publish editable PNGs to git and draw them rather quickly by dropping in predefined blocks.
I can't tell is has any relation to this. I use it to generate SVGs in Maven documentation site builds.