
VMware delivers virtualization and cloud infrastructure solutions that enable IT organizations to energize businesses of all sizes. www.vmware.com

HP Cloud Services is providing public cloud infrastructure services for organizations of all sizes. Designed with OpenStackTM technology at the core, HP's open, transparent architecture ensures no vendor lock-in, improves developer productivity, features easy-to-use tools for faster time to code, provides access to a rich partner ecosystem, and is backed by exceptional customer support.
www.hpcloud.com

Citrix gives businesses the ability to embrace consumerization using virtualization, networking, collaboration and cloud technologies. www.citrix.com

With AWS you can requisition compute power, storage, and other services–gaining access to a suite of elastic IT infrastructure services as your business demands them. With AWS you have the flexibility to choose whichever development platform or programming model makes the most sense for the problems you’re trying to solve. aws.amazon.com