- World Wildlife Fund (WWF): www.wwf.org
- World Conservation Union (IUCN): www.iucn.org
- Green Peace: www.greenpeace.org
- Center for Science and Environment: www.cseindia.org
- United Nations Environment Programme: www.unep.org
- World Watch Institute: www.worldwatch.org
- The Nature Conservancy: www.nature.org
- Global Resource Institute: www.grilink.org
- Wildife Conservation Society: www.wcs.org
- Society for Conservation Biology: www.conbio.org
- European Center for Nature Conservation: www.ecnc.org
- Zoological Society of London (ZSL): www.zsl.org
