Open Source C++ SFTP Clients

WinSCP is a popular free file manager for Windows supporting SFTP, FTP, FTPS, SCP, S3, WebDAV and local-to-local file transfers. A powerful tool to enhance your productivity with a user-friendly interface and automation options like .NET assembly or batch file scripting. Use WinSCP also for file editing, directory synchronization and site management. WinSCP is open-source and well documented. It is available in English and many other languages.

File centipede is an internet file download/upload manager, Torrent client, WebDAV client, FTP client, and SSH client. It's fast, customizable, user-friendly, multi-protocols supported, and free with no ads. It also contains many useful auxiliary tools such as HTTP requester, file merge, and encoders. With the browser integration, you can download audio and videos from websites, even encrypted videos. File centipede makes everything easy and efficient, it's the best internet download manager you can find.

Webdar is a web interface to Disk Archive and provides almost the same level of functionalities as the dar command-line interface program, to easily create, managed and restore home/personal backups.