Filezilla client

Filezilla is the most popular FTP client on the web, supporting FTP, FTPS and SFTP. It is free for commercial use, and distributed under the GPL license.

Filezilla probably has the best performance out of the many free FTP client available. The installer provided here installs only FileZilla and no other software. To uninstall, select the Uninstall menu item from the Filezilla FTP Client menu, or uninstall via the Control Panel.

We have tested Filezilla extensively with CompleteFTP.
Download Filezilla