WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.
WebDrive - WebDrive File Access Client allows you to open and edit server-based files without the additional step of downloading the file.
FTP Wanderer - Programming, source code, downloads, MFC, ATL, COM, popup killer, ftp server, ftp client, wysiwyg web builder, asp server,
Air Explorer - Air Explorer is a software to manage all your multiple cloud drives (like Dropbox, Onedrive, Google Drive, Mega, Mediafire, Box, Hidrive, Yandex, Baidu,...) as well as WebDav and FTP connections.
Forklift - The most advanced dual pane file manager and file transfer client for macOS.
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.