I am working on an experimental version of a Zettelkasten that displays as a mind map within the Mandelbrot set. It is open source and free/self hosted. I think you might be interested.https://github.com/satellitecomponent/Neurite
https://github.com/satellitecomponent/Neurite
via u/Intrepid-Air6525 at https://www.reddit.com/r/Zettelkasten/comments/168cmca/comment/jyvfhl4/?utm_source=reddit&utm_medium=web2x&context=3