I disagree. Either the OP shared because they found a useful tool and wanted others to be able to know too, in which case sharing another related tool is in th

I disagree. Either the OP shared because they found a useful tool and wanted others to be able to know too, in which case sharing another related tool is in the spirit of what OP intended. Or, OP wanted to use HN as a sales platform to pitch their work. In this case, sorry pal but HN is not your personal marketing megaphone. You want to put something out into the public here, you should expect it to be scrutinized and compared against alternatives. IMO, HN as a platform should put readers first, not authors. Edit: Just want to add that in this particular case, I think both the draw.io and graph viz plugins are awesome. Love to see these kinds of tools.