Punakea This app is designed to help you manage your files. It was created to complement Spotlight and allows you to tag files and bookmarks. This frees you from the rigid hierarchy of the Finder's directory structure.
A tag is a keyword. You can group files that have a common theme with tags. You can assign as many tags to each file as you like.
It's easy to access with its sidebar. Drag and drop is all that's required. The tag cloud allows you to see all of your tags in one place.