I've always liked ascii flow https://asciiflow.com https://asciiflow.com But actually more often I've needed things like https://github.com/weidagang/text-dia

I've always liked ascii flow https://asciiflow.com https://asciiflow.com But actually more often I've needed things like https://github.com/weidagang/text-diagram https://github.com/weidagang/text-diagram as it is much easier to maintain But I actually need more types of diagrams, so slowly, as one of many little side projects, I've been building a little library for all kinds of ascii diagram generation