Also check Andy Matuschak's "Evergreen Notes" project https://notes.andymatuschak.org/Evergreen_notes https://notes.andymatuschak.org/Evergreen_notes It's not

Also check Andy Matuschak's "Evergreen Notes" project https://notes.andymatuschak.org/Evergreen_notes https://notes.andymatuschak.org/Evergreen_notes It's not a software per se, but the way he organizes his notes is the holy grail IMHO.