Oliver (formerly "WebShare") is a PHP-based FTP front-end, released under the GPL. It allows people to access files
normally only available via FTP, effectively
providing users with a complete Web-based file
management system that, if SSL is enabled on the
Web server, uses a single secure connection. This
makes it far simpler to use through a firewall.
At present, Oliver has only been tested with
ProFTPd and PureFTPd but it should work with many others.