FileRunner is a two-pane file manager for Unix. It is simple and efficient and has a built-in FTP/SFTP/adb client. It does a reasonable (and improving) job on Windows systems. It features a simple and powerful interface, history and Hotlist (bookmarks), a recursive directory menu of the entire filesystem tree, browsing FTP, sFTP, and adb directories as easily as normal directories, asynchronous file transfers, cached directory listings, asynchronous file operations, built-in command shell windows synchronized with file panels, extensibility by adding your own command buttons, and user-defined file pattern/actions.
NovaFTP is a fast, modern, and feature-rich FTP client. Designed for rapidity and ease of use, it combines high performance, innovative features, and good design. It can download multiple files at full speed, explore remote servers through an enhanced filesystem navigation interface, connect to multiple servers at the same time, and switch between multiple FTP sessions while managing bookmarks. It offers all modern FTP features, including IPV6 support, UTF8 and large file support, secure connections through SSL/TLS, enhanced firewall support, etc.
Serv-U FTP Server is a Web, mobile device, SFTP, and FTPS file transfer server. It handles hundreds of GBs per day and thousands of users. The advanced Web interface permits transfer of multiple, large files in a single operation. It supports mobile devices including iPad, iPhone, and Android, as well as IPv6, FIPS 140-2, and more.