A Broader View Volunteers
Adelante Abroad
Africa & Asia Venture
AFS Intercultural Programs
AIDE Abroad
Ambassadors for Children
AMPED Abroad
Asociacion Salvemos Las Tortugas De Parismina
ASVO
BaseCamp International Centers
BridgeVolunteers
BUNAC
Caledonia Languages Abroad
Caribbean and the Americas
Center for Cultural Interchange (CCI)
Cloud Forest School
Concordia
Corcovado Foundation
Creative Corners
Cross-Cultural Solutions
Cultural Embrace
EcoTeach
ecoteer
Experiential Learning International
Explorations in Travel
Florida Association for Volunteer Action
GAP Adventures
GeoVisions
Global Crossroad
Global Leadership Adventures (teens)
Global Routes
Global Vision International (GVI)
Global Volunteer Network
Global Volunteers
Globe Aware
GO ECO
Greenheart Travel
Habitat for Humanity
Health Volunteers Overseas
Help Exchange
IndependentVolunteer.org
Institute of Field Research and Expedition
Interexchange
International Cultural Youth Exchange
International Education Programs
International Student Volunteers
International Volunteer HQ
International Volunteers
Involvement Volunteers Association Inc.
ISA-ELAP
i-to-i
Kaya Responsible Travel
KIDS Worldwide
Latitude Global Volunteering
La Tortuga Feliz
Maasai International Challenge
Máximo Nivel
New Hope Volunteers
Operation Blessing
Original Volunteers
Oyster Worldwide
Planeterra
Projects Abroad
Proyecto Montezuma
Proyecto San Gerardo
Putney Community Service
Rainforest Biodiversity Group
Rainsong Wildlife Sanctuary
Raleigh
Rancho Margot
RCDP International Volunteer
Real Gap Experience
responsibletravel
Rustic Volunteer Travel
Sarapiqui Conservation Learning Center
SEE Turtles
South America Inside
Surf For Life
theleap
Travel-to-Teach
TravelWorks
Tropical Adventures
True Travellers Society
United Planet
u-Volunteer
Volunteer Abroad
Volunteer and Culture XPerience
Volunteering Solutions
Volunteer Latin America
Volunteers for Peace
volunteer visions
World Endeavors
WorldTeach
Youth Challenge International