I was just trying to think why an ftp program would be used now instead of a browser which nowadays does the same thing. FTP started when the internet started (or before) and it stands for file transfer protocol, then there were no graphical browsers, they were text based. But as browsers were developed, and suddenly Internet Explorer became available, they allowed downloading of files, so no need for an FTP program.
For those interested, there are other protocols - TCP (transfer control protocol) and IP (internet protocol). These two, basically, run the internet's data.
I've not seen gFTP but most FTP programs these days are intuitive so why not have a play around with it....

EDIT: the one thing you can do with an FTP program (whereas a browser can't necessarily - depends on the web site) is put files onto a web site (once you've logged in).