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.
AWS Storage Gateway - AWS Storage Gateway is a service connecting an on-premises software appliance with cloud-based storage.
GoodSync - GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.
VMware vSAN - VMware vSAN is radically simple, enterprise-class software-defined storage powering VMware hyper-converged infrastructure.
FreeFileSync - FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.
Minio - Minio is an open-source minimal cloud storage server.