The index card version of that note-taking system sounds somewhat like Niklas Luhmann's zettelkasten or Pile of Index Cards, which have both had some posts desc

The index card version of that note-taking system sounds somewhat like Niklas Luhmann's zettelkasten or Pile of Index Cards, which have both had some posts describing them linked on HN previously: http://takingnotenow.blogspot.ca/2007/12/luhmanns-zettelkasten.html http://takingnotenow.blogspot.ca/2007/12/luhmanns-zettelkast... https://zettelkasten.de/posts/zettelkasten-improves-thinking-writing/ https://zettelkasten.de/posts/zettelkasten-improves-thinking... http://pileofindexcards.org/wiki/index.php/Main_Page http://pileofindexcards.org/wiki/index.php/Main_Page http://pileofindexcards.org/blog/cluster/ http://pileofindexcards.org/blog/cluster/ Another HN post from the zettelkasten.de domain had a comment with a link to this project on Github, which sounds a lot like the filename-based system you mention, at least in terms of putting all the info into the filename: https://news.ycombinator.com/item?id=16611413 https://news.ycombinator.com/item?id=16611413 https://github.com/galfarragem/superfolder https://github.com/galfarragem/superfolder Maybe it's not the one you were looking for, but could be useful anyway?