Authored by:: [[P- Brendan Langen]]
Napkin is built by Fabian Wittel and David Felsmann, and it employs a spatial canvas to help users traverse their thoughts and make spontaneous connections.
Working tour below, using the example of a public Napkin they built, working through Farnam Street podcasts.
Focusing on a given tag shows any related ideas:

Collection happens spatially, with all product use building around swarms of ideas.

Napkin promotes retrieval of your ideas by surfacing related concepts and reminding you what you haven’t seen recently.

[[trace provenance]] in Napkin by hovering the source, which is required for any card - 
Navigation is entirely spatial, and while it doesn’t allow for [[ZUI]], the experience feels like flying through a canvas. Napkin promotes exploration by showing notes like the one below: