I made it possible to write in Markdown in the macOS Notes.app—well, just the bare minimum, but it’s working the way I wanted.
It’s based on my existing Hammerspoon setup, which I’ve been using mainly for Emacs-style keybindings across the system. I modified it so that when I write Markdown-style text, it instantly turns into rich text inside Notes. You type > quote or # Heading, and it becomes actual formatting on the fly.
This is useful if you’re the kind of person who prefers writing in Markdown (like in Slack or Asana) but still wants the end result to be nicely formatted and readable.
I’ve published the code on GitHub.