Notes data is stored in an open SQLite3 database as Protocol Buffer data: sqlite3 "~/Library/Group Containers/group.com.apple.notes/NoteStore.sqlite" This is

Notes data is stored in an open SQLite3 database as Protocol Buffer data: sqlite3 "~/Library/Group Containers/group.com.apple.notes/NoteStore.sqlite" This is because it needs to support CRDT style syncing. But the schemas have been decoded so you can access it using pretty much any language.