This document summarizes OpenStack and provides information for developers interested in using it. It introduces OpenStack as an open source cloud computing platform for both public and private clouds. It then discusses some of OpenStack's key components, such as Nova (compute), Swift (object storage), Cinder (block storage), Glance (images), and Keystone (identity). The document encourages contributors to get involved by joining the OpenStack Foundation and contributing code through GitHub. It also advertises some upcoming OpenStack-related events in Amsterdam.