VMware vSphere!

Proxmox Virtual Environment is an easy to use Open Source virtualization platform for running Virtual Appliances and Virtual Machines.

Commercial Linux-based VPS management control panel with full support for KVM and OpenVZ virtualizations. It presents perfect tools for creating virtual machines, providing VPS hosting services and building cloud infrastructure.

OpenStack OpenStack is a global collaboration of developers and cloud computing technologists producing the ubiquitous open source cloud computing platform for public and private clouds. The project aims to deliver solutions for all types of clouds by being simple to implement, massively scalable, and feature rich. The technology consists of a series of interrelated projects delivering various components for a cloud infrastructure solution.

oVirt is a virtualization management application. That means that you can use the oVirt management interface ( the oVirt engine) to manage hardware nodes, storage and network resources, and to deploy and monitor virtual machines running in your data center.

XO is a web UI providing a simple and nice web interface to manage XenServer (or Xen+XAPI) infrastructure (VM, servers, pools, etc.)

Archipel is a solution to manage and supervise virtual machines. No matter if you have a few locally on your computer or thousands through data centers, Archipel is a central solution to manage them all. You can use all libvirt-supported virtualization engines like KVM, Xen, OpenVZ or VMWare. You can perform all basic virtualization commands and many other things like live migration, VMCasts, packages, etc.

WebVirtMgr is a libvirt-based Web interface for managing virtual machines. It allows you to create and configure new domains, and adjust a domain's resource allocation. A VNC viewer over a SSH tunnel presents a full graphical console to the guest domain. KVM is currently the only hypervisor supported.

Danube Cloud is a cloud management software used for deploying, maintaining and automating cloud data centers and their processes.

OpenNode Cloud Platform is an open source server virtualization and management solution, offering an easy and flexible way for creating your IaaS service.

Solus Virtual Manager (SolusVM) is a powerful GUI based VPS management system with full OpenVZ, Linux KVM, Xen Paravirtualization and Xen HVM support. SolusVM allows you and your clients to manage a VPS cluster with security & ease.

Virtualizor is a powerful web based VPS Control Panel. It supports OpenVZ, Xen PV, Xen HVM, XenServer and Linux KVM virtualization. Admins can create a VPS on the fly by the click of a button. VPS users can start, stop, restart and manage their VPS using a very advanced web based GUI.

VirtEngine is a Cloud Management Platform software panel used to build Private and Public Clouds (For Hosting Provider) - Our Cloud Panel which also supports VPS Servers as well as smart Cloud Computing Servers.

Feathur is a VPS control panel based on PHP. Typical Feathur installers create a linux based nginx, php and mysql system (LEMP) with a built in PHPMyAdmin and control VPS via SSH connections. Feathur is designed to have global administrators and individual users. Each administrator can control all of the VPS in the system. Each user can control any VPS assigned to them by an administrator.

Fleio is a billing solution and self-service control panel for OpenStack that enables a public cloud startup to launch its OpenStack services offering in a matter of days.

Open source virtualization manager. Deploy and manage Xen and OpenVZ containers/VPSes through easy to use graphic user interface. Free and flexible.