I was also looking for a way to better visualize text as a set of notes while still using markdown and .txt, then I came up with the idea "Sticky notes + Markdo

I was also looking for a way to better visualize text as a set of notes while still using markdown and .txt, then I came up with the idea "Sticky notes + Markdown + Tabs, All in one .txt file"[1]. It's nothing fancy, just a prototype using electron and vanilla javascript, but it might be useful. [1] https://github.com/zonetti/zonote https://github.com/zonetti/zonote