United Nations Development Programme - UNDP (inglês):
http://tcdc.undp.org

Intermediate Technology Development Group - ITDG (inglês):
http://www.itdg.org

National Center for Appropriate Technology - NCAT (inglês):
http://www.ncat.org

Institute for Appropriate Technology - I4AT (inglês):
http://www.i4at.org

International Institute for Susteinable Development - IISD (inglês):
http://www.iisd.org