Ceph - Ceph is a distributed object store and file system designed to provide excellent performance...
Veeam Backup - Backup and restore VMware and Hyper-V virtual machines with Veeam Backup Free Edition. Unlimited hosts and VMs. Free forever.
GlusterFS - GlusterFS is a scale-out network-attached storage file system.
Zerto - Virtual replication & recovery solution
Minio - Minio is an open-source minimal cloud storage server.
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.