In the Philippines:
Philippine Ecosan Network (PEN)
Center for Advanced Philippine Studies (CAPS)
Water, Agroforestry, Nutrition & Development (WAND) Foundation
Southeast Asia Rural Social Leadership Institute (SEARSOLIN)
Worldwide:
Sustainable Sanitation Alliance (SuSanA)
GTZ Sustainable Sanitation/Ecosan Program
Ecosan Services Foundation (ESF), India
Environment and Public Health Organisation (ENPHO)
Seecon International, Switzerland
German Toilet Organization (GTO), Germany