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Open Architecture Network
The Open Architecture Network is a free online library of architectural designs. The designs are creative commons-licensed and the site is media-rich.
It is a way for architects (or anyone for that matter) to share designs, including for emergency and poverty-stricken situations, and for these designs to be categorized, and rated by the community.
The Open Architecture Network was unveiled by Architecture for Humanity on March 8, 2007, and soon there after partnered with Appropedia to help build sustainable, open source solutions with the world.