| ACDI/VOCA | | A private, nonprofit organization that promotes broad-based economic growth and the development of civil society in emerging democracies and developing countries. |
| AidCamps International | | Offering opportunities for short term voluntary work on development aid projects overseas run by local non-governmental organisations in the third world. Information about projects, applying, and practicalities. |
| Altruistic Adventures | | Specializes in providing information to independent travelers interested in including a charitable component within their journey. History, contact information and expedition information. |
| Amigos de las Americas | | Offers opportunities for young people to in public health, education and community development. Stories, Locations, Dates, and Rates. |
| Amistad Institute | | Spanish programs with options for activities, volunteers and internships. Also a camp for middle and high school student groups. Includes prices and contact information. |
| ARCAS | | ARCAS is a non-profit Guatemalan NGO formed in 1989 by a group of Guatemalan citizens who became concerned as they saw their precious natural heritage rapidly disappearing before their eyes. |
| Asociacion ANAI | | A non-profit organization in Costa Rica: includes list of ecological conservation projects, ecotours; nature photos. |
| Asociacion Casa Guatemala | | An shelter in Guatemala for orphaned, abandoned, or abused children. Information about their activities, projects and supporters. Includes details of their needs, and on volunteering. |
| AustraLearn | | Study abroad in Australia and New Zealand, detailing full degree program information, summer courses, internships, scholarships and financial aid, and application. |
| Australian Volunteers International | | Recruit, prepare and support Australians who volunteer to live, work and learn alongside people of other cultures in developing countries. Information about opportunities, programs and history. |
| Belize Botanic Garden | | Belizean species are presented in an educational setting, including special collections such as Heliconias, orchids, and palms. Goals are to recreate specific habitats such as Pine Ridge, Baldy Beacon, as well as a savannah, a rainforest, and a riverine eco-system. Education on the horticultural heritage of Belize, including sustainable agriculture. San Ignacio, Belize. |
| Bethany Home | | Provides a comprehensive service for children and adults who are disabled and lives in the Hilir Perak district but also throughout Malaysia. |
| Birders Volunteer Directory | | North America's largest membership organization for active birders, with news, details on publications and programs, and birding resources. |
| Blue Ventures Conservation | | UK based not-for-profit organisation working to facilitating projects that enhance global coral reef conservation and research. |
| Break Charity | | Charity that provides a wide range of services for children, adults and families with special needs. These include respite care, UK holidays in Norfolk and the West Country and specialist child care. |
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