WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.
VMware vSAN - VMware vSAN is radically simple, enterprise-class software-defined storage powering VMware hyper-converged infrastructure.
Igloo Software - Igloo is a modern intranet, it connects people with the information they need to do their best work.
AWS Storage Gateway - AWS Storage Gateway is a service connecting an on-premises software appliance with cloud-based storage.
Cyberduck - A libre FTP, SFTP, WebDAV, S3, Backblaze B2, Azure & OpenStack Swift browser.
Minio - Minio is an open-source minimal cloud storage server.