| ECOCLUB.com | International club for ecolodges, ecotourists and ecotourism experts. |
| Ecotourism.cc | Ecotourism portal, home of the Ecotourism Ring. |
| Earthfoot's Ecotour Posterboard | Find a local guide for personalised eco-tour experiences. |
| Ecotourism Resource Centre | Big Volcano, an Award-winning site and a comprehensive guide to ecotourism. |
| Planeta.com: Eco Travels in the Americas | Virtual library archiving more than 8,000 pages about ecotourism and conservation. Includes contacts and bibliographies. |
| Great Outdoor Recreation Pages | International guide to wildlife viewing. |
| Exotic Worldwide Adventures | Ecotours in Venezuela, Thailand and the USA |
| Envirotours.com | Environmental and educational tourism opportunities primarily in Africa, South American and Canada. |
| Ecotravel.com | Resource for travelers detailing ecotourist destinations. |
| Manaca Ecotravel | Offer ecotours to bio-diversity hotspots worldwide. |
| Earth Routes | Reservations, resources and personal experience in off-the-beaten-path nature-oriented travel. |
| Journeys International, Inc. | With more than 300 eco-trips to 45 worldwide destinations for nature and culture explorations. |
| EcoVentures Nature Tours and Travel | Offering guided small group tours and customized tours for individual travelers. |
| Greentours Natural History Holidays | UK based company who offer worldwide natural history tours. |
| International Wildlife Adventures | Offering trips around the world to observe and photograph wildlife. Led by professional photographers and naturalists. |
| Kalahari Management Inc. | Information and consultancy for the ecotourism industry. |
| Space Coast Nature Tours | Narrated tours on custom pontoon boat. Sightings of dolphin, manatee and birds plus shuttle launches from the Indian River Lagoon in Titusville, Florida. |
| Responsibletravel.com | Lists eco-friendly holidays for destinations around the world. Links to articles and travel tools included. |
| Footloose Forays | A selection of educational trips into the natural world, from day trips to three week adventures, near or far. Specializing in small groups. |
| Better World Travelers Club | Member-based organization offering goods and services to environmentally aware consumers. Services include emergency roadside assistance, auto and home insurance, and a broad range of travel services. The organization donates one percent of annual revenues toward environmental clean-up and travel. |
| TravelOrganic | Lists organic businesses and services for travelers with organic lifestyles. |
| One World Journeys | Offering in depth photography expeditions dedicated to connecting people with the planet. Includes schedules, past journeys, and environmental articles. |