Over the years developing websites, I've struggled to find a decent bit of FTP software that meets all the criteria that I wish for, all I ask is that it does a couple of things..

1. It's freeee.

2. It's reliable.

3. The layout is relatively easy to use, i.e. pretty standard, left-to-right drag and drop functionality.

4. It can store a (managable) directory of my sites.

5. It allows me to back up the many sites that I have stored.

Well Filezilla is the answer! The backup utility is great! - it exports all your sites into an xml file, ready for import or backup. No longer will I kick my computer because I've lost all my FTP site entries, well done Tom Kosse!

Website: http://filezilla-project.org