There are both free and paid FTP clients available. Generally the paid-for software will come with technical support available from the developer where a free client may not have support or it may be community-based support only.
Four popular FTP clients which you may wish to consider using and we have interactive walkthroughs for some of these within this section of the Knowledge Base (KB) include –
FileZilla Client — a free download available from http://filezilla-project.org
SmartFTP — a paid download available from http://www.smartftp.com
CuteFTP — a paid download available from http://www.cuteftp.com
WS_FTP — a paid download avlailable from: http://www.wsftp.com
Please note, not all FTP clients support every feature. For example, CuteFTP Home Edition does not support Secure FTP (SFTP). We find that FileZilla Client meets the needs for most clients as it is a free download and supports most all features including FTP, SFTP, and FTPS.
Disclaimer: The pricing information and mentioned features were correct at the time of posting. Please check with the FTP client developers for the latest information regarding their particular product.