Filestash - Filestash is a modern client for FTP, SFTP, S3, WebDAV, Minio,...
FTP Synchronizer - Secure and high performance FTP File Sync product
FTPbox - FTPbox is an open-source application that allows you to synchronize your files to your own host...
FreeFileSync - FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.
rsync - rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.