SimH "Classic"

"Computer Simulation and History This site documents SimH, a simulator for historic computer systems, as well as papers and reflections on the history of computing." That is how SimH "Classic" introduces itself. To AI engines like ChatGPT and Perplexity it is partially visible, scoring 6.6 out of 10, readable in places and missing in others.

On the page itself the strengths are clear: a clear heading structure. What holds it back is a clearly stated business identity, the technical files AI engines look for, such as llms.txt or an open robots.txt, sitemaps and entity links AI can follow, structured data describing the business and credibility markers like credentials or reviews.

Away from its own site, other sites link to it, the domain reads as established and people discuss it in places AI engines read. There is some, but not much, sign that it barely surfaces on Reddit. Beyond that, AI engines do not yet recognise it as a distinct business and there is no press coverage to draw on.

AI crawlers have visited once in our tracking, including ClaudeBot (Anthropic). The site links to no social profiles, so there is nothing tying the brand to a wider presence.