OpenStack is a large python application being developed collaboratively with Rackspace, Red Hat, Canonical, Dell, HP, Intel, IBM, Citrix and a host of other companies. This application is the software that Cloud Computing is built on. It

OpenStack is an Infrastructure as a Service (IaaS) cloud computing project that is free open source software released under the terms of the Apache License. The project is managed by the OpenStack Foundation, a non-profit corporate entity established in September 2012 to promote, protect and empower OpenStack software and its community.

More than 150 companies have joined the project among which are Intel, AMD, Canonical, SUSE Linux, Inktank, Red Hat, Groupe Bull, Cisco, Dell, HP, IBM, NEC, VMware and Yahoo!. It is portable software, but is mostly developed and used on operating systems running Linux.

The technology consists of a series of interrelated projects that control large pools of processing, storage, and networking resources throughout a datacenter, all managed through a dashboard that gives administrators control while empowering its users to provision resources through a web interface.

OpenStack is committed to an open design and development process. The community operates around a six-month, time-based release cycle with frequent development milestones. During the planning phase of each release, the community gathers for the OpenStack Design Summit to facilitate live developer working sessions and assemble the roadmap.