Provides guidelines and standards, training, technical assistance, research and publications to foster sound ecotourism development, with membership in over seventy countries.

Campaigns to reduce social and environmental problems connected to tourism. Includes guides to ethical tourism and educational resources for students and teachers, and members area with forums.

Members trade association formed to promote sustainable tourism in Alaska. Site includes a directory of approved members who abide by agreed Ecotourism guidelines.

Non-profit organization operates an eco-certification program to identify genuine ecotourism and nature tourism operators in Australia.

Network of ecolodges and operators. Includes articles and interviews with exotourism experts.

Green travel planning, tours, car rentals, benchmarking and certification

Green Hotels Association® encourages, promotes and supports the "greening" of the lodging industry.

Works to conserve biodiversity and ensure sustainable livelihoods by transforming land-use practices, business practices and consumer behavior.

Responsible travel to natural areas which conserves the environment and improves the welfare of local people.

Education and outreach services for travelers, providers and related organizations to support ecology - while protecting and promoting cross-cultural understanding and economic development.