What are some alternatives?
When comparing CliQr and Proxmox Virtual Environment, you can also consider the following products
LINK Datacenter - LINK Datacenter owns and operates one of the largest data centers in Egypt.
oVirt - oVirt is a virtualization management application.
Apache CloudStack - CloudStack is an open source cloud computing software for creating, managing, and deploying infrastructure cloud services.
Virtualizor - Virtualizor is a powerful web based VPS Control Panel.
ManageEngine Desktop Central - Desktop Central is a Desktop Management and Mobile Device Management Software for managing desktops in LAN and across WAN and mobile devices from a central location. It supports managing Windows, Mac and Mobile devices running iOS 4 and above
VMmanager - VMmanager is a virtualization management software, which presents a perfect tool for creating virtual machines, providing VPS services and building cloud infrastructure.