Why ouroborous over watchtower for docker ?

I use obsidian but I wish there was an open source notes platform that could do what I want:

1. Excalidraw support ( or similar ) with PDF import and annotation support ( this is achieved by a plugin on obsidian )
2. Vim mode
3. Markdown for everything

I have tried so many notetaking tools and the closest I ever got was using xournalpp for PDF annotation and drawing, then writing plain markdown in helix / neovim, with a live markdown rendering pane on the side. Was just too clunky though.

Hackberrypi CM version looks great

I’m writing documentation in obsidian. I then expose it to the web so I can access from all my devices and share to others with quartz. Everything is markdown. It’s tunneled out of my network with cloudflare tunnels, which do handle SSL for me.

This is really cool! Do you know of any existing tools doing similar stuff to this ?