Cyberduck is an open source FTP manager on Mac OS X. After installation of the software, follow the below steps.
1. There is a "+" button in the bottom left corner, click on that button to create a connection to your server.
2. A form will appear, provide the ftp connection details. If you are not sure about the "More Options", leave it as it is.
3. Once you are done, save the settings and click on the bookmark to connect to your server.
Cyberduck Homepage - http://cyberduck.ch/
Cyberduck Help Documents - http://cyberduck.ch/help/en/