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Complementary currency toolkit

Freecoin is a set of tools to let people run reward schemes that are transparent and auditable to other organisations. It is made for participatory and democratic organisations who want to incentivise participation, unlike centralised banking databases. Freecoin aims to leverage the use of social digital currencies in a reliable, simple and resilient way.

Freecoin's user journey

Freecoin is a web application that can be used stand-alone or integrated into systems, it facilitates value circulation and identity management, supporting multi-signature authentication and off-line transactions on top of multiple blockchains backends.

Freecoin software architecture

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Freecoin development is informed by the experience of with blockchain technologies, the renown talent of Thoughtworks Inc. into user experience and the research conducted in the D-CENT project.

The motivations behind Freecoin's design choices are detailed in this Digital Social Currency Design document. The main use case for Freecoin are complementary currency systems and credit circuits (C3), but it can well be used as a self-hosted wallet to manage multiple blockchain based accounts.

Freecoin is free and open source software (Affero GNU General Public License v3+) written in Clojure to offer a RESTful API and a clean user interface with attention to improve the developer experience and facilitate its adoption by front-end software applications.

Freecoin development has started recently and not yet ready for production use. You are welcome to write a statement of interest to and we'll keep you updated on our progress.


Freecoin is developed and maintained by Denis Roio with contributions by Gareth Rogers, Duncan Mortimer and Andrei Biasprozvanny.

The Freecoin "cornucopia" logo is an artwork by Andrea Di Cesare.

Freecoin is copyright (C) 2015 by and Thoughtworks Inc.