Veeam Backup - Backup and restore VMware and Hyper-V virtual machines with Veeam Backup Free Edition. Unlimited hosts and VMs. Free forever.
Minio - Minio is an open-source minimal cloud storage server.
Zerto - Virtual replication & recovery solution
Qumulo - Qumulo hybrid cloud file storage delivers real-time visibility, scale and control of data across on-prem and cloud. Scale-across with simplicity.
Acronis Backup and Recovery - Acronis Backup is a data recovery solution that offers more ways of storing and recovering drives, folders and files as compared to other similar solutions.
WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.