CherryTree vs Obsidian
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.
Obsidian is a Markdown-based note-taking powerhouse with excellent note-linking abilities. You can easily build and navigate whole knowledge bases with Obsidian.
Fan of note-taking apps? 🤔
Maybe Paper is what you're looking for.