The Notebook Navigator plugin replaces the default file explorer with a notes-style dual-pane interface that prioritises fast navigation and visual organisation. It presents a hierarchical folder and tag tree alongside a configurable file list, supports keyboard-first workflows, multi-selection, drag-and-drop, and pinning to streamline file operations. Visual features include note previews, feature-image thumbnails, date grouping and customizable appearances per folder or tag, plus extensive theming support and RTL layout handling. The plugin scales to very large vaults through virtualised rendering and IndexedDB caching, and exposes a public API for scripts and other plugins. Mobile and desktop interactions are considered equally, making it a full-featured alternate navigator for users who prefer a more structured, themeable file browser.