Bazar (which of course means "Bazaar" in Spanish) is a web application for distributed commerce combined with distributed social networking. It is written in Ruby, and currently all interface text and documentation is in Spanish. The design allows multiple instances of the program to interconnect (thus making it "distributed"), though it is not clear what sorts of information are exchanged between instances.
Bazar is described as a "b2b marketplace with a social layer" that allows users to interact in ways other than monetary transactions (buying and selling). Unlike a standard social network, however, Bazar users must be business entities of some sort.