Excaligen

"Excaligen is a free AI diagram generator that turns natural-language descriptions into fully editable Excalidraw diagrams, flowcharts, architecture diagrams, mind maps, kanban boards, and." That is how Excaligen introduces itself. To AI engines like ChatGPT and Perplexity, though, it is barely visible: it scores 4.6 out of 10.

On the page itself the strengths are clear: structured data describing the business, a clear heading structure, crawler access and the files AI engines look for and sitemaps and entity links AI can follow. It is passable on a partly stated business identity. What holds it back is credibility markers like credentials or reviews.

Off the page, almost no other sites link to it, the domain does not yet read as established, AI engines do not yet recognise it as a distinct business, there is no press coverage to draw on, nobody is discussing it where AI engines look and it does not come up on Reddit. Those are earned elsewhere on the web, not fixed on the site itself.

The site links to no social profiles, so there is nothing tying the brand to a wider presence.