Founded in 1826, the Zoological Society of London (ZSL) is an international scientific, conservation and educational charity whose mission is to promote and achieve the worldwide conservation of animals and their habitats.

SAGA is a non-profit organization founded in 1998.

The Orang Utan Republik Foundation was first founded in October 2004 as the Orang Utan Republik Education Initiative.

The Orang Utan Republik Education Initiative Indonesia was formally established as an Indonesian NGO in mid-2007 to provide OUREI with a legal mechanism to conduct its mission in Indonesia.

Restore UK was established in 2001 as a grant-making charity to invest in the protection and restoration of Britain's natural habitat.

Iowa Primate Learning Sanctuary, formerly known as the Great Ape Trust, is a sanctuary and scientific research facility in Des Moines, Iowa, dedicated to understanding the origins and future of culture, language, tools and intelligence.

People depend on nature for many things. A stable climate. Clean air. Fresh water. Abundant food. Cultural resources. And the incalculable additional benefits the world’s biodiversity provides. Conservation International works to ensure a healthy and productive planet for us all.

The Primate Specialist Group is a network of scientists and conservationists who stand against the tide of extinction which threatens humanity’s closest kin.

The International Ranger Federation (IRF) is a non-profit organization established to raise awareness of and support the critical work that the world’s park rangers do in conserving our natural and cultural heritage.

The Orang Utan Republik Foundation was first founded in October 2004 as the Orang Utan Republik Education Initiative (OUREI). OUREI began its mission as a project under Social and Environmental Entrepreneurs (SEE) to save wild orangutans from extinction through education and outreach programs.