A long time ago I stumbled upon this post: https://news.ycombinator.com/item?id=36564042#36565438 which discussed using Dewey Decimal Classification to provide a website index. Well, it took me some time to implement this, and it might be too little, too late, but I'm having a lot of fun developing it. Here's a website link: https://llmc.domainsproject.org
Criticism is welcome.