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I have question.... Is it safer FTP client then Filezilla?

Это отзыв для предыдущей версии этого дополнения (2.0.13.1-signed). 

It's as safe as Filezilla, as far as I know! It's better to use SFTP or FTPS. For any FTP client, the FTP protocol itself can be insecure (in the same way HTTP is insecure but HTTPS isn't). Hope that helps!