Veeam Backup - Backup and restore VMware and Hyper-V virtual machines with Veeam Backup Free Edition. Unlimited hosts and VMs. Free forever.
Zerto - Virtual replication & recovery solution
Rubrik - Rubrik delivers instant application availability for recovery, search, cloud, and development.
Barracuda MSP - Barracuda MSP is the first and only MSP-focused provider of advanced threat protection with backup & disaster recovery - complete data protection for MSPs.
Azure Site Recovery - Azure Site Recovery can protect Microsoft Hyper-V, VMware, and physical servers, and you can use Azure or your secondary datacenter as your recovery site.
EMC Avamar - EMC Avamar deduplication backup software and systems provide fast, daily full backups and single-step data recovery.