The underlying technology(LXC) is quite similar to OpenVZ, the main difference being that LXC comes standard with the Linux kernel while OpenVZ comes as a modul

The underlying technology(LXC) is quite similar to OpenVZ, the main difference being that LXC comes standard with the Linux kernel while OpenVZ comes as a module. They are both lightweight virtualization technologies that create separate process and memory spaces inside the same kernel. I think OpenVZ is also much older then LXC.