FileZilla Client for Mac is an open-source program that allows you to make FTP transfers. It is a bare-bones application that is easy to use and which should suit the needs of anyone looking to perform basic FTP transfers.
Very easy to use: Many FTP programs both look and feel complicated, and an inexperienced user can easily feel overwhelmed. The FileZilla Client is very well laid out and easy to understand. As long as you have the information required to connect to an FTP server, you should have no trouble using the program, even if you have never used an FTP program before.
Reconnection button: There is a very handy button at the top of the client that allows you to reconnect to the last server you connected to with the program. If you don't use FTP very often and don't have an easy time remembering all the connection details, this is a great way to speed up and streamline the process.
Comprehensive help resources: If you click on the "?" mark in your menu bar and select "Getting Help," you are redirected to the FileZilla online help and wiki, which is a very comprehensive and useful resource for learning how to make the most out of the program.
Cramped display: When the program first opens, the display areas look very cramped. Although you can expand the way filenames are displayed, upon first launch everything is so cramped that it is difficult to read your folder names, making it even more difficult to navigate through them.
If you've never used FTP before and need to send or receive a file, FileZilla Client for Mac is a fine option. It is easy to use, even when it is your first time. Beyond that, if you're confused in any way, the excellent online help should be able to answer any questions you might have.