Charity Navigator Provides in-depth, objective analysis of the financial health of more than 1,700 of America’s largest charities.
Charitywatch.org of New York is responsible for supervising charitable organizations to insure that donors and beneficiaries of those charities are protected from unscrupulous practices in the solicitation and management of charitable assets.
Give.org Useful links for charity information from the Better Business Bureau.
GuideStar Searchable database of U.S. non-profits and charities' activities and finances. Includes foundations tax return information.
Idealist.org Includes a directory of thousands of nonprofit websites, an online library for nonprofits and a database of volunteer opportunities nationwide.