RedFoot

Redfoot is an extensible RDF server written in python for building networks of distributed data sharing nodes. It is being developed by Daniel Krech and James Tauber. It can be used to develop personal or workgroup information environments, community web sites or any kind of application that involves managing the relationships between different information objects in a consistent yet extensible manner.

http://redfoot.sourceforge.net/

Requires RDFLib (http://rdflib.net/latest/) which has an In-Memory Triple Store backend and a BerkeleyDB backed triple store in the works and Medusa (for HTTP support).