More on - CC Open Source Software

 First one:
CommunityForge.net
Tools for localisation

Our hosted website makes building and managing your community easier, and it's...

* free
* simple to set up
* adaptable
* scalable
* customisable

Second one:
Open Source Currency
Example: austin time exchange network 

Powered by Insoshi
Insoshi is a social networking platform in Ruby on Rails. You can use Insoshi to make custom social networks; see the Insoshi demo site for an example. For support, join the Insoshi Google group.