Kloxo is to much buggy on the DNS, and some other scrips, my favorite is cPanel which is awesome.

I had a personal VPS from swvps.com with Kloxo for a while, and it the basics, never had any issues.

Having said that; now I use cPanel and DirectAdmin all of the time, Kloxo seems just a bit slow and awkward.

Kloxo is too limited in that it doesn't correctly support 64-Bit CentOS 5, or CentOS 6. So I would never use it for a production box.

Kloxo is good for LEBS also, Its lwo memory so to run a site on it is nothing, I am running wordpress on a 128/258 vps with kloxo running and only using about 80mb of ram.

You can sell cheaper packages especially for vps clients with Kloxo as it certainly reduce control panel cost.

Kloxo is not that great if you plan to sell hosting plans on a professional basis. for this you are better off with Direct Admin or cPanel.

I wouldn't recommend Kloxo for any serious web hosting. It's intentions are good, but I dont think its stable enough.

Kloxo is OK for personal sites, but as stated if you are serious about webhosting you need either Direct Admin or cPanel. Although the preferred control panel is cPanel

It is a nice web hosting control panel. But they have it only for CentOS 5 but not installable under CentOS6 for now.