Joplin vs Obsidian
Joplin is a powerful, open source note-taking app, supporting a wide range of ways to capture and organize various notes, todos, and ideas.
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.