Agroforestry Research Trust
   English nonprofit group conducts research into temperate agroforestry and into all aspects of plant cropping and uses, with a focus on tree, shrub and perennial crops.
   http://www.agroforestry.co.uk/

Agroforestry.net
   Provides practitioner information and training in tropical agroforestry and forestry.
   http://www.agroforestry.net/

AridZoneReforestation.ca
   Contains knowledge for planning reforestation projects in semi-arid areas of developing countries.
   http://www.aridzonereforestation.ca/

Brazil Nut Project
   About the Brazil nut and its role in tropical forest conservation. Project is conducting research on Brazil nuts, a popular commercial nut and a valuable non-timber forest product, with objective of increasing as an economically valuable forest product.
   http://www.bertholletia.org/bertholletia/

ECHO - Educational Concerns for Hunger Organization
   Offers useful information and resources to practitioners around the world, with an emphasis on self-sufficiency systems to prevent food shortages. Topics include tropical agriculture and appropriate technology.
   http://www.echonet.org/

Forest, Farm, and Community Tree Network (FACT Net)
   An incarnation of the Nitrogen Fixing Tree Association (NFTA), which provides information on the use of nitrogen fixing and multipurpose trees.
   http://www.winrock.org/forestry/factnet.htm

Forestry AgNIC: Agroforestry
   Collection of internet links in agroforestry.
   http://forestry.lib.umn.edu/agnic/agroforestry.phtml

Glossary for agroforestry
   A glossary of the terms used in scientific writing about agroforestry.
   http://www.bugwood.org/glossary/

Leucaena, The Environmental Regeneration Tree
   Information on the multiple uses of Leucaena, using Leucaena to fight global warming and use as multiple utlity crop for tropical farmers and landowners. Access to seeds and consultancy.
   http://www.satglobal.com/leuccore.htm

Management of Organic Inputs in Soils of the Tropics Homepage
   Management of Organic Inputs in Soils of the Tropics (MOIST) is a rich source of information on green manure/cover crops and hosts an active email discussion group on green manures/cover crops.
   http://ppathw3.cals.cornell.edu/mba_project/moist/home2.html

Native American Agroforestry
   A research paper detailing some of the ecological aspects of the Northeastern Native American agroforestry practices.
   http://www.daviesand.com/Papers/Tree_Crops/Indian_Agroforestry/

Sustainable Harvest International
   Providing farmers and communities in the tropics with long-term assistance implementing environmentally and economically sustainable technologies.
   http://www.sustainableharvest.org/

The Australian Master TreeGrower Program
   An 8 weeks educational program for landholders that can make an important contribution to the development of farm forestry. University of Melbourne.
   http://www.mtg.unimelb.edu.au/

Trees for the Future
   Trees for the Future is a non-profit organization initiating and supporting agroforestry self-help projects in cooperation with groups and individuals in developing countries.
   http://www.treesftf.org/

University of Missouri Center for Agroforestry
   Foci are interdisciplinary research, education, training and demonstration. The aim is to initiate, coordinate and enhance agroforestry activities to meet environmental, social and economic land management needs.
   http://agebb.missouri.edu/umca/

World Agroforestry Centre (ICRAF)
   The World Agroforestry Centre combines excellence in scientific research and development to address global poverty, hunger and environmental needs through collaborative programs and partnerships that transform lives and landscapes locally and globally.
   http://www.worldagroforestrycentre.org