2Way Development
A Broader View Volunteers
Action Africa Programme
African Impact
Anir Experience
Biosphere Expeditions
BridgeVolunteers
Canadian Alliance for Development Initiatives and Projects CADIP
Concordia
CURE International
CUSO-VSO
ecoteer
GAP Adventures
Global Crossroad's Wildlife Volunteer
Global Vision International (GVI)
GO ECO
Habitat for Humanity
Help Zambian Children Fund
International Justice Mission
Involvement Volunteers Association Inc.
i-to-i
Kaya Responsible Travel
Languages Abroad
Oyster Worldwide
Pathfinders
Project Concern International
proliteracy
Reach the Children
Real Gap Experience
responsibletravel
SCORE (Sports Coaches' OutReach)
SpanAfrica
SPW-UK
SPW-USA
theleap
Travellers Worldwide
TravelWorks
Volunteer Adventures
Volunteers for Peace
VSO International
World Wide Opportunities on Organic Farms