If you really need FileZilla, you can directly download the portable version with this workaround.

Visit http://downloads.sourceforge.net/project/filezilla/FileZilla... to directly start downloading

Or, switch to someother FTP client.

References:

List of FTP Server Software - https://en.wikipedia.org/wiki/List_of_FTP_server_software

Comparision of FTP Client Software - https://en.wikipedia.org/wiki/Comparison_of_FTP_client_softw...