CGIProxy acts as an HTTP or FTP proxy. Through it, you can retrieve any resource that is accessible from the server it runs on.
Chestnut FTP Search
Chestnut FTP Search is an application to search for files on FTP servers. Files can by searched only by file/directory names, nor be file contents. Users can query files by part of the file name, the entire file name, a regular expression, or a shell pattern.
LazyFTP is a commandline PHP script that keeps remote files in sync with local files via FTP. It monitors a local directory tree for changes and uploads or deletes files as necessary to keep the remote directory in sync.
nanoFTPd is an ftp daemon written in php. as of version 4.2.0, php supports the command-line interface (stable since 4.3.0), which nanoFTPd relies on. nanoFTPd is modular, so it's easy to add custom modules and other stuff, like different database interfaces.
net2ftp is a Web-based FTP client, offering standard FTP client functionality for Web pages.
NotFTP is a simple web-based HTTP <-> FTP gateway written in PHP. It supports file downloads, uploads, directory creation, and file and directory deletion.
Oliver is a free, web based FTP front-end, written in PHP and released under the GPL. It is intended to allow people to access files, normally only available via FTP, using a web browser.
PPMy is a simple webb based administration utility to administrate users and groups to a proftpd ftp server with its users and groups in a MySQL database.
PureFTPD PHP User Manager
ppum is a PureFTPD PHP User Management System designed for an easy web-based administration of MySQL stored and authenticated FTP users.
PureUserAdmin is a PHP webbased user management tool for PureFTPd user databases.
web-FTP is a Perl/CGI FTP client that can provide quick, easy, and (with an SSL-enhanced Web server) more secure access to your FTP server.