Anahita is a remarkable social networking platform and framework for building apps and services that connect people, places, and things. Out of the box, it only provides the minimum essentials needed to launch a social network plus a powerful framework for extending and customizing. Anahita is open source and it is available under the GPL3 license.
To install and get started on Anahita please read the guide at Getting Started
If you need any help with the Anahita installation or have general question about Anahita. You visit http://GetAnahita.com or follow the Anahita project group at http://www.anahitapolis.com/groups/group/42242-anahita
You can also check out Anahita API at http://anahitapolis.com/api