Absolutely to test: Document Library Explorer 1.0
https://www.professionalsharepoint.com/dle/default.aspx
- Expandable/collapsible treeview
A treeview control to allow you to navigate through folders within a document library - Drag and Drop
The ability to move or copy files between folders within a particular library, or between two different libraries using drag and drop* - Breadcrumb control
Provides as another option for navigation - Fileviewer Pane
Contents pane provides many of the features of a standard list view web part, such as the ability to sort and specify which columns are available in the view. The contents pane also provides the popup edit menus available in list views for editing, check-in/checkout, version history etc. - Browse document libraries from various sources
Ability to point the web part to a document library within another Sharepoint Portal area or WSS site collection - Toolbar
Provides functions similar to the listview web part for creating new documents and folders, and uploading documents - Configurable
Many configuration options to switch on or off features as desired - Enhanced paging
enables both forward and back movement through paged data, as well as an indicator for page numbers - Advanced state management
Allow multiple instances of the webpart to be present on the same webpart page without relying on query strings. State management also remembers where you are within a library, so that if you need to browse away from the page for a short period, you will be taken back to the correct folder or page on your return