Multi-threaded FTP client with bookmarks, sync, scheduling and optional skins - Windows Shareware $39.95. 3D-FTP is lightning fast FTP client with multi-threaded transfer engine providing up to 20x faster file transfers. You can browse and change directories while transferring files in background. Features like bookmarks, direct remote editing and directory synchronization make 3D-FTP perfect tool for webmasters.

Also feature for calculating directory total size (including subdirectories) is great for keeping web site total size below limits. Other features include: Antivirus scanning for downloaded files, print file listings, custom commands w/ macros, autoresume, autoreconnect, KeepAlive, optional skins and recurring scheduling. You can extend the 3D-FTP with API architecture and Plug-Ins (free SDK and source code available).