FTP Voyager lets you perform FTP tasks as if working locally in Windows Explorer. It is a free and open source FTP client application that's customizable.
Here are some screenshots to illustrate the features and user interface of this application:
Customizable FTP client, brimming with features. Screenshot of FTP Voyager - 883px · 660pxHighly customizable interface. Screenshot of FTP Voyager - 979px · 640pxFTP Voyager: Functions. Screenshot of FTP Voyager - 1046px · 803pxFTP Voyager: FTP client. Screenshot of FTP Voyager - 841px · 627pxFTP Voyager: User interface. Screenshot of FTP Voyager - 902px · 662pxScreenshot of FTP Voyager - Size: 902px · 662px