sharedbrain is a simple pre-processor for Hugo markdown files. I was inspired by Roam, which presents backlinks for all of your notes and automatically generates pages for notes you haven't created yet. sharedbrain does something similar… you can take a directory edited with nvALT, for example, and generate from that a set of posts ready to run through Hugo to generate a site.
It's certainly possible to share Roam notes directory, but I wanted a more "published" form, running on my own domain.