Gollem is a Web-based file manager that provides the ability to fully manage a hierarchical file system stored in a variety of backends such as a SQL database, as part of a real filesystem, or on FTP, Samba or SSH servers. It supports uploading and downloading of files, basic file operations, permissions support, and MIME recognition and viewing of files through the Horde MIME library. It is fully internationalized and translatable.
net2ftp is a Web-based FTP client, offering standard FTP client functionality using a browser. Users can also zip files, email them in attachments, edit code in their browser, or view code with syntax highlighting. Configuration options: restrict the access to one FTP server; ban IP addresses or FTP servers; set a daily consumption limit; and 3 kinds of logging. It works under PHP's Safe Mode. MySQL is optional (only required for logging and consumption tracking).
phpXplorer is an file management system and explorer that makes it possible to work on a remote file system through a Web browser. By default, it includes dialogs for editing HTML, PHP, images, Apache, compressed files, and emails. Its modular design makes it easy to build your own filetypes, property sheets, views, and themes. A permission manager allows you to restrict access to the shared file system for multiple users in a detailed way.