twzFileStore is a very simple web-based "file manager"-like application, restricted to a single directory (and any subdirectories) on your web server. It requires PHP5 or later.
Using twzFileStore you can upload and download files, delete files, add and remove sub-folders, search for files by filename and browse files in sub-folders. Any of these features can be disabled if required, potentially on a per-user basis.
Using twzFileStore you can NOT view file contents online, edit, rename, move or compress files, or rename folders.
For more information, see the documentation at http://tweezy.net.au/doco/twzFileStore/