This is the closer to what I imagined the Dip from "Fall; or, Dodge in Hell" would be that I have encountered so far - maybe I'm miss remembering and it was not

This is the closer to what I imagined the Dip from "Fall; or, Dodge in Hell" would be that I have encountered so far - maybe I'm miss remembering and it was not a software at all but I have been looking for some kind of hub like this since I read that book. So glad I checked this link. Thanks for making it!