The 10 Best Open-Source Products Of 2011

8. OpenStack

OpenStack is the open-source cloud platform brought into the world by the working partnership of Rackspace and the National Aeronautics and Space Administration (NASA,) and its work has been one giant leap for cloud kind. Bearing down on almost 5,000 open source contributions and several dozen new features, OpenStack is now beginning to change the on-demand computing ecosystem in a meaningful way.

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