SearchinQ

http://www.convio.com/
Provides nonprofit organizations with online marketing and fund raising solutions.

http://www.allianceonline.org/
The Alliance for Nonprofit Management is the professional association of individuals and organizations devoted to improving the management and governance capacity of nonprofits - to assist nonprofits in fulfilling their mission.

http://www.firstgiving.com/
Works with individuals and nonprofit organizations to raise money through online donations.

http://www.GlobalHealthcareFoundation.org
Non-profit charity organization dedicated to helping disadvantaged individuals and groups through better healtcare access and medical advancements.

http://www.guidestar.org/
The leading source of information on U.S. nonprofits. A searchable database of more than 1 million IRS-recognized nonprofit organizations.

http://www.idealist.org/
Idealist.org is the online meeting place for nonprofit organizations, resources, consultants, job seekers and volunteers.

http://www.acenewyork.org
Uses charitable donations to provide homeless services to help and rehabilitate homeless men and women in NYC.

http://www.qcguide.org
Learn how this organization can help your registered nonprofit group, or browse our noncommercial city guide. Featured is a dining guide, web directory of education and social organizations, and write ups of notable art and museum events.

http://www.volunteerlatinamerica.com
Volunteer work opportunities in Mexico, Central and South America in the environmental and humanitarian sectors.