FileZilla: A free open source ftp solution.
From their site:
FileZilla Features: Overview
FileZilla Client is a fast and reliable cross-platform FTP, FTPS and SFTP client with lots of useful features and an intuitive graphical user interface.
These resources are taken from Deltina Hay’s critically acclaimed book, The Social Media Survival Guide, already in its second edition. Social Media Power readers can get a discounted copy of the book from the publisher. Learn more about Deltina and her availability for speaking engagements at Deltina.com. You may also enjoy listening to her video tutorial series on YouTube.