Ace the Himalaya
Asian Footsteps
Asian Pacific Adventures
Audley Travel
BlueBee Odysseys
Boundless Journeys
Country Walkers
Crystal Mountain Treks
Exodus Travel
field guides
Footloose Adventure Travel
G.A.P Adventures
Geographic Expeditions
Getaway! Himalayan Eco-Trekking
Go Differently
Guerba World Travel
Himalayan Kingdoms
Holiday Moods Adventures
Indian Nature Tours
Intrepid Travel Pty Ltd
Ibex Expeditions Pvt Ltd
JOURNEYS International
KarmaQuest Ecotourism and Adventure Travel
kumuka
Mountain Travel Sobek
Myths and Mountains
Naturetrek
Nomadic Expeditions
Original World
Peregrine Adventures Pty Ltd
RIMO EXPEDITIONS
Saddle Skedaddle
socialtours
Soul Adventures
Spice Roads Bike
Wilderness Journeys
Wilderness Travel
Wind Horse Holidays, Inc
Wings Birding tours
Worldwide Ecolodges
Yak Adventure Travel

ALSO: ADVENTURE and VOLUNTEER TOURISM GUIDES