Nifty Box offers the visualization of tag clouds in a hierarchical tree view. You can easily group related tags into folders very similar to the familiar handling of playlists and folders in iTunes. Nifty Box can show these tags either as traditional lists or as tag clouds.
Nifty Box is tightly integrated with the Mac system by exporting tags and notes to Spotlight. This way Spotlight can read your tags and smart folders get even smarter. Now you can add descriptive keywords to your Web bookmarks, photos, PDFs, or any other file type just by drag & drop. Spotlight will find the items based on your custom metadata.