Joplin takes a traditional approach to notes: there's notebooks, pages, then notes. Obsidian is more focused on zettelkasten - creating a network of smaller but

Joplin takes a traditional approach to notes: there's notebooks, pages, then notes. Obsidian is more focused on zettelkasten - creating a network of smaller but refined notes that are all tagged and interconnected, which ends up looking somewhat like a bunch of neurons (hence _second brain_). It's also much more extensible. I've seen Obisidian extensions that add kanban and moodboards to notes, for example.