Association for Volunteer Administration: http://www.avaintl.org/index.html
CASANet: http://www.casanet.org/program-management/volunteer-manage/index.htm
Center for de Study of Philanthropy http://philanthropy.org
Charity Village: http://www.charityvillage.com
Energize Http://www.energizeinc.com
International Association for Volunteer Effort http://www.iave.org
Internet Nonprofit Center: http://www.nonprofits.org/
National Council of Nonprofit Associations (NCNA) http://www.ncna.org/
Non-Profit Nuts & Bolts: http://www.nutsbolts.com
Nonprofit Volunteer Resource Center: http://www.mapfornonprofits.org/
Points of Light Foundation: http://www.pointsoflight.org
Service Leader: http://www.serviceleader.org/
Vois http://www.vois.org.uk/
Volunteer Canada: http://www.volunteer.ca
Volunteer Match: http://www.volunteermatch.org
Volunteer Today: http://www.volunteertoday.com/
» Oficina Virtual de Voluntariado