A shareconomy is a concept of an economy based on sharing - following the principles of free software. Christian Siefkes coined the term in his book on this topic. The distribution of goods and resources are done based on principles of sharing.
Christian Siefkes - From Exchange to Contributions: Generalizing Peer Production into the Physical World (Edition C. Siefkes, Berlin, 2007. CC-by-nc-sa license. ISBN 978-3-940736-00-0)