Net2ftp is an open-source, web-based file transfer client and FTP client written in PHP. It enables a user to transfer files between a web server and a local or remote computer using a web browser as an interface. It also supports a wide range of features, such as: directory listing, copy/move/delete/rename files and directories, editing of text files, uploading/downloading of files, chmod (change file permissions) and more. It is designed to be an easy-to-use, secure and reliable solution for webmasters and developers, allowing them to manage their website files quickly and easily.
Pydio
HTTP Commander
Monsta FTP
FileVista
KCFinder is good for uploading files directly to the web server, but it does not support FTP connection, so it is not really an alternative for a web-based *FTP* client like Net2FTP.