WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.

Dropbox - Online Sync and File Sharing

FileZilla - FileZilla is an FTP, or file transfer protocol, client. It lets individuals transfer single files or batches to a web server. For many years, FTP was the standard for website design. Read more about FileZilla.

Mega - Secure File Storage and collaboration

PyroBatchFTP - PyroBatchFTP/SFTP helps you to exchange files with internet SFTP servers in an automated way by processing scripts. e.G. to automatically update documents on web servers.

Google Drive - Access and sync your files anywhere