Sustainable development
| International Network for Sustainable Energy - Inforse |  |
www.inforse.org | International, Sustainable development | English, French, Spanish |
| International Emissions Trading Association - IETA |  |
www.ieta.org | Climate change, International, Sustainable development | English |
| International Institute for Sustainable Development - IISD |  |
www.iisd.org | Data & information resources, International, Sustainable development | English, French |
| World Business Council for Sustainable Development - WBCSD |  |
www.wbcsd.org | International, Sustainable development | English |
| World Wide Foundation - WWF |  |
www.wwf.org | Climate change, International, Sustainable development | All |
| Polish Foundation for Energy Efficiency - FEWE |  |
www.fewe.pl | Energy efficiency, Poland, Sustainable development | Polish, English |
| The Energy Efficiency Center - Seven |  |
www.svn.cz | Czech Republic, Energy efficiency, Sustainable development | English, Czech |
| Ekopolis |  |
www.ekopolis.sk | Energy efficiency, Sustainable development, Switzerland | German, French, Italian |
| Mon-environnement.com |  |
www.energiestadt.ch | Energy efficiency, Sustainable development, Switzerland | German, French, Italian |
| United Nations Development Programme - UNDP |  |
www.undp.org | International, Sustainable development | English, French, Spanish |