SimPlEdi is a Web-based editor for MP3 playlists (M3U) which are used in popular music players like Winamp or XMMS. The file locations are stored relative to the playlist location, which makes it possible to use the generated lists on changing environments such as mounted network drives or CDROMs.
GNOME Commander is a fast and powerful graphical file manager. It has a "two-pane" interface in the tradition of Norton and Midnight Commander. It features drag'n'drop, GNOME MIME types, FTP, SFTP, and WebDAV using the GnomeVFS FTP module, SAMBA access, the ability to extend the context menu with entries to call external applications or scripts on the selected items, quick device access buttons with automatic mounting and unmounting, a fast file viewer for text and images, a history of recently accessed folders, and folder bookmarks.
Weeble File Manager (WeebleFM) is a PHP file manager that operates through an FTP connection. It offers a wide variety of functionality and is similar to the Web-based file managers used by Tripod and Yahoo. WeebleFM gives Web-space providers the chance to offer their clients a quick and easy alternative to FTP, TELNET, and SSH.
Waffle (Waffle's A Fast File Level Explorer) is designed to allow users to browse their files quickly using a Windows Explorer-like interface. It allows you to launch applications by double clicking on files, and each file extension is associated with a different application of your choice. It is has a plugin API for writing extensions.
The Apache::FileManager module is a simple HTML file manager. It provides file manipulations such as cut, copy, paste, delete, rename, extract archive, create directory, create file, edit file, and upload files. It also has the ability to rsync the server htdocs tree to another server with the click of a button.