Citrix XenServer vs ZSvirt
Citrix XenServer
citrix.comZSvirt
zsvirt.ioSide by side
| Figure | Citrix XenServer | ZSvirt |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | Yes |
| Web | — | Yes |
| Windows | Yes | — |
| Linux | Yes | Yes |
| API | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 3 |
| Spec score · Virtualization Management Software | 8.4 (#5) | 8.1 (#8) |
| Live migration | Virtual machines can be live migrated between XenServer hosts to support maintenance with minimal or no downtime. | The product supports hot and cold migration between hosts and across several local, NFS, SAN and distributed-storage combinations. |
| Security | XenServer 9 reduces attack surface with a custom control-domain operating system and disables HTTP on the management interface for new installations, requiring TLS connections. | Listed security features include a Native Key Provider, VM SecureBoot, vTPM 2.0, VM encryption, security groups, MFA/2FA, and immutable audit logs. |
Plans
ZSvirt
- ZSvirt Open SourceFree
- Contact vendorPriced on request
- Plus licensePriced on request
In their own words
Citrix XenServer
Citrix XenServer is an enterprise virtualization platform for workloads in on-premises and hybrid environments. Its hypervisor pools compute, storage, and networking resources and allocates them to virtual machines. Hosts require XenServer OS on dedicated 64-bit x86 bare-metal servers, and the listed guest architecture is x86_64. The platform supports snapshots, GPU acceleration, high-availability policies, and live migration between hosts. A pool can contain up to 32 hosts. XenCenter runs on supported Windows systems; a standalone remote CLI can be installed on RPM-based Linux distributions. XenServer 9 uses a custom control-domain operating system, and new installations disable HTTP on the management interface, requiring TLS. GPU pass-through supports NVIDIA, AMD, and Intel GPUs; NVIDIA vGPU support for XenServer 9 is preview-only and not fully supported. XenServer is paid, with pricing available on request and a 90-day trial that does not include official support. The listed trial edition supports a three-host pool.
ZSvirt
ZSvirt is an open-source, self-hosted virtualization platform based on ZStack’s ZSphere virtualization engine. It uses KVM and the site says one control plane can manage 10,000+ hosts, with VMs of up to 768 vCPUs. The ZSvirt Open Source plan has no license fee and no VM limit; it is offered with community support. Live migration, high availability, disaster recovery and API access are listed capabilities.
For VMware migration, ZMigrate supports agentless full-disk replication, incremental sync and cutover in as little as five minutes. Listed security features include VM SecureBoot, vTPM 2.0, encryption, security groups, MFA/2FA and immutable audit logs. Integration options include Go, Python and Java SDKs, native Terraform providers, GitOps and 2,000+ REST/OpenAPI endpoints. Storage and compatibility options include distributed storage integrations, SAN support, the KVM ecosystem, VMDK, and mainstream hardware and guest operating systems. Downloads include x86_64 ISO, OVA and QCOW2 images, plus the ZMigrate package. Enterprise adds advanced multi-cluster and compliance capabilities, LTS releases, SLAs and vendor-backed production support.