https://anytype.io nextcloud
And offcourse Drupal 😜
What existing apps could have a Nostr integration or plugin?
Stuff like https://obsidian.md/, https://fraidyc.at/ or https://github.com/AntennaPod/AntennaPod.
Discussion
Does Anytype have a plugin system? It looks like it's a very closed app.
It's early for Anytype, I'm using is besides Notion because it's still quite buggy and their UX / feature lists is not as good as Notion yet.
A plugin system is on their roadmap: https://github.com/orgs/anyproto/projects/1?pane=issue&itemId=29227670 for what it's worth