The National Fund of Forestall Financing (FONAFIFO), executes the Payment for Environmental Services Program (PPSA), for the benefit of small and medium landowners of lands with forest or forest aptitude with the purpose of promoting the maintenance and the recovery of the forest of Costa Rica.

Friends of the Osa (FOO) – Amigos de Osa – was founded in 2003 as a nonprofit organization with a goal to preserve the Osa peninsula's globally significant biodiversity. FOO maintains a small office in Washington, D.C. with larger staff based on the Osa Peninsular – in Puerto Jimenez, Costa Rica.

The Corcovado Foundation is a non-profit organization dedicated to the conservation of the natural resources in the Osa Peninsula, especially in government protected areas such as Corcovado and Piedras Blancas National Park, Golfo Dulce Forestry Reserve, Caño Island Biological Reserve and Golfito Wildlife Refuge. With the support of donors and NGOs, such as The Nature Conservancy, Conservation International and others, we have hired 72 park rangers and other important positions such us environmental educators, forestry engineers and environmental lawyers. We are also promoting "Best Practices" and sustainable tourism among hotels in Drake Bay and the Osa Peninsula. We have an environmental educator working permanently in Drake Bay promoting community development, recycling and other important topics.

The Organization for Tropical Studies (OTS) is a nonprofit consortium of nearly sixty universities, colleges, and research institutions from around the world. In the early 1960's, scientists from U.S. universities forged working relationships with colleagues at the Universidad de Costa Rica in the interest of strengthening education and research in tropical biology. Intense interest, both in the U.S. and in Costa Rica, led to the founding of OTS in 1963. OTS was founded to provide leadership in education, research and the responsible use of natural resources in the tropics.