It's a notes taking app.
Currently it's not deployed but you can run it locally with npm run dev (I guess you may need to have Vite installed for it).
react-mde Note: it doesn't support React 18, it's a known issue Stack overflow What it does: it's a Markdown editor for React
Showdown What it does: it's a Markdown to HTML converter, so it allows to see the preview of the Markdown file in the browser. Without it the "Preview" tab does nothing.
React-split What it does: allows for the split view with the draggable thingy in the middle
Split tutorial Why is it helpful: it's a tutorial