CherryTree vs Joplin
CherryTree is an open-source hierarchical note-taking app, featuring rich text and syntax highlighting. It stores everything in a single XML or SQLite file.
Joplin is a powerful, open source note-taking app, supporting a wide range of ways to capture and organize various notes, todos, and ideas.
Fan of note-taking apps? 🤔
Maybe Paper is what you're looking for.