CoreCluster!

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.

Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides resizable compute capacity in the cloud. It is designed to make web-scale computing easier for developers.

VMware vSphere Hypervisor ( based on ESXi ) is a free bare-metal hypervisor that virtualizes servers so you can consolidate your applications on less hardware.

CoreOS is a new Linux distribution that has been rearchitected to provide features needed to run modern infrastructure stacks. The strategies and architectures that influence CoreOS allow companies like Google, Facebook and Twitter to run their services at scale with high resilience. We've implemented them correctly so you don't have to endure the slow, learn-as-you-go infrastructure building process.

Google Compute Engine is not just fast. It’s Google fast. In fact, it’s a class of fast that enables new service architectures entirely..

OpenVZ is container-based virtualization for Linux.

Apache's CloudStack is a Project backed by Citrix and designed to be a direct competitor to OpenStack. It is designed to deploy and manage large networks of virtual machines, as a highly available, highly scalable Infrastructure as a Service (IaaS) cloud computing platform.

CloudSigma is increasingly being recognized for its advancement of the cloud IaaS industry. Apart from being Swiss owned, CloudSigma is valued for its high flexibility & no vendor lock-in, excellent price-performance ratio as well as unprecedented customer support. Our high quality standards made clients like the European Space Agency, CERN, Deutsche Boerse, Siemens, Picturepark and many more place their long-term trust in CloudSigma.

Eucalyptus is open source cloud software for building AWS-compatible private and hybrid clouds.

CloudVPS is the number one cloud provider in the Netherlands. Whether you need a single machine or a complex load-balanced cluster, our flexible cloud lets you create the Virtual Private Servers (VPSes) and Cloud Storage you need quickly and securely. We are leading the market with our implementation of the revolutionary OpenStack technology and in the area of cloud certification.

Rackspace US, Inc. (NYSE: RAX) is an IT hosting company based in San Antonio, Texas. The company also has offices in Australia, the United Kingdom and The Netherlands[2] and data centers operating in Texas, Illinois, Virginia, the United Kingdom, and Hong Kong in late 2008. The company's email and apps division operates in Blacksburg, VA.

ElasticHosts offers cloud hosting and cloud computing solutions: scalable, flexible virtual private servers on demand for web applications and more!

Cloud based service with a ton of applications to install in minutes in your vm.