What is "filezilla"
Filezilla is a client FTP, Open source SFTP and FTPS for Microsoft Windows and GNU/Linux.
It is distributed under GNU license (General Public License). Since March 1, 2007, it ranks 9th in the list of the most downloaded of Sourceforge, unlocking names like phpBB, Pidgin and Mingw.
There is a version of the program for portable use called Filezilla Portable. With it, you can run Filezilla directly from a portable hard drive as a USB stick.
For more information, visit: Filezilla.