CloudLinux as far as I can tell have taken the OVZ kernel and altered it to isolate users rather than containers.
CloudLinux is not compatible with OpenVZ and Virtuozzo. VZ doesn't allow customer kernels, and CloudLinux requires its own kernel to operate. This limitation prevents CloudLinux usage inside containers. We are working with Parallels on bringing CloudLinux to VZ customers.
Other virtualizaiton technologies like Xen, VMWare, KVM, Hyper-V, Parallels BareMetal are supported.
We use and recomend it And we believe that's coming really soon for OpenVZ, take a look at http://www.cloudlinux.com/company/news/index.php?ELEMENT_ID=1677
Anyone tried BetterLinux?
Next month should see several enhancements to betterlinux, at which time I will be curious to see who comes out one top for that round.
that will be easy as the answer will be Cloudlinux.
How many have heard or Cloudlinux?
How many have heard of Betterlinux?
Maybe, but who did you hear of before CloudLinux. Its the natural course of things, competition breeds innovation.