The Circle Way:  http://www.thecircleway.net

Appreciative Inquiry:  http://appreciativeinquiry.case.edu
   
Berkana Institute - learning journeys - http://www.berkana.org 

Art of Hosting:  http://www.artofhosting.org

Garrison Institute:  http://www.garrisoninstitute.org

Servant Leadership:  Greenleaf Institute:  http://www.greenleaf.org

Open Space:  http://www.openspaceworld.org

Peer Spirit:  Writing and Vision Quests http://www.peerspirit.com

World Cafe:  http://www.theworldcafe.com

Otto Scharmer - U-Theory - Presencing:  http://www.ottoscharmer.com

Society for Organizational Learning:  http://www.solonline.org