The 10 Best Open Source Products Of 2012

9. OpenStack

Just two short years in existence, OpenStack has already made quite a name for itself. The open source cloud deployment stack shepherded by NASA and Rackspace is used by Cisco, Dell, HP, IBM and Intel, and it now enjoys more than 150 partner companies. The effort enjoyed a major software release this year (more on that later) and continues its runaway lead from the top three competitors CloudStack, OpenNebula and Eucalyptus.

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