The Credit Commons Collective is an initiative by the largest complementary currency networks towards interoperability.
Co-author, with Prof Jem Bendell of the Money & Society MOOC, a free online interdisciplinary masters level course.
Created open source software for community exchange, notably the Community Accounting module and Hamlets.

I blog about my work and other thoughts from time to time. Sign up on the left for email notifications!
The Trading floor game workshop co-created with Sybille Saint Girons. Experiential learning on how money works.
I co-founded Community Forge with Tim Anderson, which now provides free software to over 250 active community currency projects.

I've recorded two audiobooks, The End of Finance and The New Approach to Freedom.
In 2013-14 I toured several ecovillages in Europe to find out about how their economies worked.