Want to use Mozilla Firefox browser as a FTP client? Go for FireFTP Firefox add-on, which enhances the popular web browser to work as a FTP client. FireFTP provides easy access to FTP servers and supports the basic operations of a standard FTP client. In other words, with this add-on you can enjoy all the benefits of a regular FTP program – that is too right within your favorite web browser! Give it a try.
To help you in quick and secure transferring of files, this Firefox add-on comes with some advanced features such as: directory comparison, search/filtering, syncing directories while navigating, SFTP, SSL encryption, integrity checks, remote editing, drag & drop, file hashing, file compression, proxy support and much more!
FireFTP is an open source program and is available in over 20 languages. It works on Windows, Mac OS X, Linux. You need Firefox 3.5 or higher to use this add-on.
More Info and Download Link: http://addons.mozilla.org/en-US/firefox/addon/684