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OpenShift is Red Hat's free, auto-scaling Platform as a Service (PaaS) for applications. As an application platform in the cloud, OpenShift manages the stack so you can focus on your code.

Google App Engine is a free* platform for developing and hosting web applications in Google-managed data centers. App Engine offers fast development and deployment; simple administration, with no need to worry about hardware, patches or backups; and effortless scalability.

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.

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..

Exoscale is an IaaS cloud platform for individuals, developers and businesses worldwide.Launched in 2011, it is headquartered in Switzerland, with several availability zones across Europe: * Genva* Zurich* Frankfurt* Vienna

Gplugin creates a totally private cloud infrastructure in 10 minutes without any startup fee or commitment. Whenever you need a new IT service as a Virtual PBX, Mail Server, Web Server, you will access the GPlugin Marketplace to choose your solution from different providers and run it without any technical team.

Virtkick makes VPS hosting easy for your clients with the lightweight and user-friendly approach. Whether you're a small data center, a game hosting company or a huge enterprise, Virtkick is easy to plug-in and make the most of your hardware without extra costs.

Google Cloud platform enables you to build and host web apps on the same systems that power Google applications. App Engine offers fast development and deployment; simple administration, with no need to worry about the underlying infrastructure and systems, patches or backups, and 99.95% SLA for business users; and effortless scalability from hundreds to millions of users.

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.

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.

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

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.