ClonOS is a turnkey Open Source platform based on FreeBSD and the CBSD framework. ClonOS offers a complete web UI for easily controlling, deploying and managing FreeBSD jails containers and Bhyve/Xen hyperviser virtual environments.
ClonOS is currently the only platform available which allow both Xen and Bhyve hypervisor to coexist on the same host. Being a FreeBSD base platform, ClonOS ability to create and manage jails allows you to run FreeBSD applications without losing performance.
Features:

easy management via web UI interface
live Bhyve migration [coming soon, roadmap]
Bhyve management (create, delete VM)
Xen management (create, delete VM) [coming soon, roadmap]
connection to the "physical" guest console via VNC from the browser or directly
Real time system monitoring
access to load statistics through SQLite3 and beanstalkd
support for ZFS features (cloning, snapshots)
import/export of virtual environments
public repository with virtual machine templates
puppet-based helpers for configuring popular services

ClonOS is a free open-source FreeBSD-based platform for virtual environments creation and management. In the core:

FreeBSD OS as hoster platform
bhyve(8) as hypervisor engine
Xen as hypervisor engine
vale(4) as Virtual Ethernet Switch
jail(8) as container engine
CBSD Project as management tools
Puppet as configuration management

Minimum requirements:

CPU: 64-bit (Intel EMT64 or AMD64), support for Intel VT/AMD-V;
At least 2 GB of RAM;
LAN card;
HDD;

We like existing (but unfortunately Linux-only) solutions such as Proxmox,Triton (Joyent),OpenStack, OpenNebula, Amazon AWS and we believe that FreeBSD OS is able to give something similar.

CBSD - is a low-level framework for manage FreeBSD virtual environment management

MyBee - A satellite of the CBSD project and a subproject of ClonOS, which is a separate distribution. It is the simplest API for creating and destroying cloud environments.