Essentially, WPLocalFolder providing a convenient way to make a (large) set of files accessible in a WordPress site without the overhead of importing the files as WordPress objects.
Overview of WPLocalFolder features:
-basic file / folder actions (add/upload, delete, move)
-file unpacking (just .zip format for now)
-metadata for files and folders
-file backup & revisioning support (when files deleted or overwritten)
-filters for hiding files and/or folders
-support for counting
-file space quota limit support
-upport for and/or disregard of OS file permissions settings
-auto-load of a 'default file' on WPLocalFolder base object access
-configurable settings for most WPLocalFolder features
Note: See PloneLocalFolderNG on Plone CMS.