Online FTP Manager for quick ftp access

For webmasters, FTP is the way to move files between the server and local development system. There are many useful clients for FTP, such as FireFTP plugin for Firefox.
Even then, there are certain circumstances in which there is a need to manipulate the FTP contents when a FTP client is not available.
Online FTP clients come handy in such situations.
http://www.net2ftp.com/ is one web based FTP client.
It supports the following functions, described in the screenshot.