Filetransfer
FTP, SFTP, SSH and more
WinSCP
Martin Prikryl
WinSCP is an open source free SFTP client, FTP client, WebDAV client, S3 client and SCP client for Windows.
Its main function is file transfer between a local and a remote computer. Beyond this, WinSCP offers scripting and basic file manager functionality
ffftp
Kurata Sayuri
FFFTP is lightweight FTP client software. FFFTP has many useful feature such as directory mirroring, character encdoging conversion, Firewall and SOCK, one-time password support, and so on.
SmartFTP Client
SmartSoft Ltd.
SmartFTP is a fast and reliable FTP, FTPS, SFTP, HTTP, Amazon S3, WebDAV, Google Drive, Google Cloud Storage, Microsoft OneDrive, Backblaze B2, Telnet, Terminal client with lots of features and a modern user interface.
Rclone
Rclone
Rclone ("rsync for cloud storage") is a command-line program to sync files and directories to and from different cloud storage providers.
Cyberduck
iterate GmbH
Cyberduck is a libre server and cloud storage browser for Mac and Windows with support for FTP, SFTP, WebDAV, Amazon S3, OpenStack Swift, Backblaze B2, Microsoft Azure & OneDrive, Google Drive and Dropbox.