Sustainable Cities Collaboratory, a Metropolis initiative
European Union
UN-Habitat
UNEP
Network of Associations of Local Authorities of South East Europe (NALAS)
United Nations Educational, Scientific and Cultural Organization - UNESCO
UN-Habitat | UNHCR
United Cities and Local Governments - UCLG
OECD
UN-HABITAT, UNCDF, UCLG-Africa, UNECA