OpenStack is an Innovative, open source cloud computing software for building reliable cloud infrastructure. The goal of OpenStack is to allow any organization to create and offer cloud computing capabilities using open source software running on standard hardware.

OpenStack Compute is software for automatically creating and managing large groups of virtual private servers. OpenStack Storage is software for creating redundant, scalable object storage using clusters of commodity servers to store terabytes or even petabytes of data.

All of the code for OpenStack is freely available under the Apache 2.0 license. Anyone can run it, build on it, or submit changes back to the project. They strongly believe that an open development model is the only way to foster badly-needed cloud standards, remove the fear of proprietary lock-in for cloud customers, and create a large ecosystem that spans cloud providers.

Requirements: -
Demo: http://www.openstack.org/
License: Apache 2.0 License