SolusVM ( Solus Virtual Manager ) is robust GUI-based VPS management solution from Plesk. It supports fully Xen Paravirtualization, OpenVZ, Xen HVM and Linux KVM.
SolusVM makes it possible to sell various types of hosting infrastructure-as-a-service products – CDN, DNS, hybrid and private cloud with integrated storage, VPS hosting, dedicated servers and more. There are numerous integrations with well-known billing systems like WHMCS, Hostbill and Blesta.