Eco and Intentional Communities, Co-Housing and Retreats
Co-Housing
Cornerstone Village Cohousing - Massachusetts, United States
Federation of Damanhur - Italy

Co-Operatives
Mondragón Corporación Cooperativa - France
Scoraig - United Kingdom
Tamara - Portugal
The Co-operative Housing Federation of Toronto - Ontario, Canada

Intentional Communities
Alpha Farm - Oregon, United States
Earthaven Ecovillage - North Carolina, United States
Twin Oaks Intentional Community - Virginia, United States
ZEGG - Zentrum für Experimentelle GesellschaftsGestaltung (Center for Experimental Culture Design) - Germany

Retreats
Breitenbush Hot Springs - A Center for Consciousness in the Oregon Wilderness - Oregon, United States
Kientalerhof - Ausbildungszentrum Ferien- und Erholungshotel Seminarhotel - Switzerland
Lost Valley Educational Center - Oregon, United States
Narrow Ridge Earth Literacy Center - Tennessee, United States
The Health Center of the Alps - Switzerland

Various
Arcosanti Home - Arizona, United States
L'Arche - Canada

Info, Resources and Research
ASH - Autonomous & Sustainability Housing - Official Site of Alberta's EcoHome
Centre for Alternative Technology
Context Institute - exploring and clarifying just what is involved in a humane sustainable culture
Eco-Village Resources Directory
Ecovillage Training Center - The Farm's Ecovillage Training Center
Green Communities Association Canada
Intentional Communities Web Site - your source for community information since 1994
Mission of the UBC James Taylor Chair - how to design and build affordable, equitable, and ecologically healthy communities
Network For a New Culture - a North American group that was originally inspired by the 9-year-old German community ZEGG
OSEE Ontario Society for Environmental Educators - Ontario, Canada
Suspro - the Sustainable Living & Shelter Project
Sustainable Development Research Initiative (SDRI) - research on sustainability that advances knowledge and contributes to the solution of real-world problems
Tararu Valley Sanctuary and Conservation Trust - the Sanctuary is a co-operatively run rainforest property at the head of Tararu Valley
The Environmental Directory - Earth's Biggest Environment Search Engine
The Walter and Duncan Gordon Foundation - objective: to expand public participation in building sustainable Northern communities