Virtualizor supports OpenVZ, Xen, XenServer and Linux-KVM on CentOS and Ubuntu and they all can be managed from the Master.
The Virtualizor Team has released Virtualizor 2.5.2 This version has many bug fixes and some critical bug fixes.
1) [Critical Bug Fix] These are critical bug fixes and we recommend all users to upgrade immediately. Virtualizor has auto-upgrade enabled by default so your installation of Virtualizor will auto-upgrade in 24 hours if you have not disabled auto-upgrades. Critical bugs were reported by Rack911.
2) [Feature] This release contains support for CentOS 7 as base node for KVM Virtualization. Other hypervisors will also be supported soon in CentOS 7.
3) [Bug-Fix] Fixed number of cores calculation bug in Xen on CentOS 5 based nodes for CPU Pinning.