Offering opportunities for short term voluntary work on development aid projects overseas run by local non-governmental organisations in the third world. Information about projects, applying, and practicalities.

Offers international work, study, and volunteer programs for students, graduates and professionals. Links to a number of national affiliates.

International volunteering and internship opportunities for cross-cultural learning and community service in Thailand and Tanzania. Short-term (two to four weeks), long-term (two to six months), and student internship programs are available, in projects in healthcare, education, and environment/sustainable agriculture.

Provides a database of worldwide volunteer opportunities with no or low fees. Also supplies online educational resources for volunteers.

Lists currently available international dental volunteer opportunities. Sponsored by the American Dental Association.

Resource for short-term international projects in developing and emerging-market countries worldwide. Includes information for prospective volunteers, and a service to match people to possible projects.

Supports human development globally by promoting volunteerism and by mobilizing volunteers. Includes news on partnerships and activities, information for volunteers, and publications.

Worldwide online volunteering opportunities of United Nations Volunteers. Volunteers can find online volunteer assignments. Non profits in developing countries looking for online volunteers can post assignments here.

Offers placement in over 1800 short-term international voluntary service programs in 70 countries. Its programs are like the Peace Corps, but short-term.

Crowd-sourced encyclopedia article about scientific research conducted, in whole or in part, by volunteer amateur or nonprofessional scientists.

Citizen science projects using the efforts and ability of volunteers to help scientists and researchers deal with the flood of data that confronts them. From the Citizen Science Alliance.