Cork
Cork is a complete online file management system. It can perform all standard file processing like multiple uploads, deletes, compression, directories, mail attachments, and direct web to web file transfer. The system also supports many standard coommunity features like mail lists, announcement posts, discussions, and address books. Cork delivers a secure password protected enviroment that includes user administration, an array of user privileges, and any nested level of user accounts. File permissions and user privileges may be assigned individually in any directory. It works on all browsers.