Filestash - Filestash is a modern client for FTP, SFTP, S3, WebDAV, Minio,...
Sync.com - Sync. com offers a backup tool and a file sharing service, rolled into one.
FTPbox - FTPbox is an open-source application that allows you to synchronize your files to your own host...
CloudBerry Box - CloudBerry Box provides bi-directional synchronization of data across remote computers.
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.
Yandex.Disk - Files on Yandex.Disk won't get lost if your phone or computer breaks.