FloatFTP is an easy to use FTP client, designed specifically for the constant uploader. FloatFTP places a drop point on your desktop which allows you to just drop the files you want to upload onto it. There is also a site browser for those that needs to do additional actions, such as downloading, deleting or creating directories.

The license of this software is Free Trial Software, the price is $19.99, you can free download and get a free trial.