From OpenVZ Virtuozzo Containers Wiki
| Parameter
|
OpenVZ
|
Virtuozzo
|
Proxmox
|
Citrix Xen
|
Microsoft Hyper-V
|
| Virtualization type
|
Containers
|
Containers and hypervisor
|
Containers and hypervisor
|
Hypervisor
|
Hypervisor
|
| Guest OS support
|
Linux
|
Windows, Linux, FreeBSD (limited support)
|
Windows, Linux (KVM)
|
Windows, Linux (limited support)
|
Windows, Linux (limited support)
|
| Opensource
|
Yes
|
No
|
Yes
|
Yes
|
No
|
| Source code
|
Yes
|
No
|
Yes
|
Yes
|
No
|
| Support
|
Yes, community support and pay support
|
Full support
|
Yes
|
Yes
|
Yes
|
| Hosting automation
|
???
|
Yes, PACI, etc
|
???
|
???
|
???
|
| Shared storage
|
Odin Cloud Storage
|
Odin Cloud Storage
|
CEPH
|
???
|
???
|
| Ability to donate
|
Yes
|
No
|
Yes
|
???
|
???
|
