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.

The Ripple Project - Open Souce Payment System/Concept

Ripple is a project to build a new kind of monetary system based on the trust present in our ordinary social and business relationships.

A peer-to-peer network protocol for making decentralized Ripple payments between users on different computers, a payment system where everyone is a banker.

Connect to your friends, family, and associates and your credit with them becomes a fully-functional currency

Software Implementations of the Ripple Concept

* Ripplepay - the original implementation
* Shire Hours - Ripplepay clone
* Rain Droplet - Open decentralized community credit service based on Ripple

Ripplexchange
Forum for exchange goods and services using Ripple!

Different (more sophisticated) software same concept:

Multiswap.net - Reinventing free trade
A free platform for circular barter exchange. See a flash demo!

Great further multimedia sources about the concept of Ripple.
Very extensive list of  ComparisonOfPaymentSystems

What is Money? - A quick intro to the ideas behind Ripple pay

Cyclon - Open Souce Currency Software

An interesting complementary currency software project free to use.

Cyclos offers an complete on-line banking system with additional modules as e-commerce and communiction tools. Cyclos is currently available in ten languages and used worldwide by organisations and communities. The Cyclos platform permits a de-centralization of banking services and can stimulate the consolidation of relations through community features and the focuss on local trade.

Extract from a article in the guardian:

Transition Town Brixton is working alongside Nef and the Social Trade Organisation to develop a digital platform that will work across the mobile phone network. Users will be able to send a text message to the bank with their account details, the amount and the shop's account number.

 For more info visit: www.cyclos.org