Specops Adventures
- Customized adventure vacations conducted by US Special Forces veterans, including survival camps, white water rafting, surfing, scuba diving, sea kayaking, horseback riding, and jungle hiking in places including Costa Rica and Hawaii.
- http://www.specops.com/

Intrepid Travel
- Offers a variety of active tours to Asia, Africa, Antarctica, Australasia, Europe, the Middle East, Latin America and North America, including expeditions.
- http://www.intrepidtravel.com/

Jeju Eco Travel
- Provides walking, scuba, golfing and multi-sport tours of Jeju Island in South Korea.
- http://jejueco.com/

Eastern Outdoors
- Summer tour operator offering whale watching, sea kayaking, canoeing and biking. Describes all activities and locations.
- http://www.easternoutdoors.com/

Lewis and Clark Trail Adventures
- Offers a variety of guided interpretive trips along the Lewis and Clark Trail in both Montana and Idaho. Canoe the Upper Missouri, hike or bike the Lolo Trail and raft the Main Salmon, Lochsa or Clark Fork Rivers.
- http://www.trailadventures.com/

Evolution 2
- Adventures schools located in Tignes, Val d'Isere, Montchavin La Plagne, Chamonix, La Rosiere, Cote d'Azur and Pays Basque. Skiing, canyoning, rafting, tubing. Free brochures. In English and French.
- http://www.evolution2.com

Alpine Adventure Sports
- Offers programs in paragliding, white water rafting, rock climbing and mountain biking. Summer and winter programs available. Offers free brochures, accommodation information and photo gallery. Located in Annecy, France.
- http://www.paraglidingholidays.com/

TrekAmerica Adventure Travel and Tours
- Offers year-round programmes and tours including adventure camping, lodging and hiking tours in the USA, Canada, Alaska, Mexico, Guatemala and Belize.
- http://www.trekamerica.com/

Alacran Surf Tours
- Specializing in surf travel in Costa Rica. Also offers eco-tours of sportfishing, jungle canopy, river rafting, kayaking, snorkeling, scuba diving, horseback riding. Includes photo gallery and destination information.
- http://www.alacransurf.com

A Connecting Thread
- Offers theme-based activity retreats and sports outings, including hiking, skiing, and cycling, and canoeing in Virginia and surrounding areas.
- http://www.aconnectingthread.com

The Argonauts
- Offers real-time expedition information, a travelogue section, and other facts for planning adventures.
- http://www.theargonauts.com

Rugged Elegance
- Information and upcoming events from this agency offering educational, outdoor adventures.
- http://www.ruggedelegancetours.com

Kepplewray Centre - Cumbria
- An outdoor activity centre in the heart of the English Lake District. Kepplewray specialises in inclusive holidays and field study courses (catering for groups and families where some of the members have disabilities)
- http://www.kepplewray.org.uk

Adventure Travel Base Camp
- The internet basecamp for adventure travel. Find discount tickets and gear. Get travel ideas, comments, reviews.
- http://www.ekibo.com/

Space Adventures
- Space, and space-related adventure travel and tourism: from space camps and astronaut training to actual flights into space.
- http://www.spaceadventures.com