"Charity Navigator works to guide intelligent giving. We help charitable givers make intelligent giving decisions by providing information on more than eleven hundred charities and by evaluating the financial health of each of these charities."

Charity Watch

Charity Watch created by the American Institute of Philanthropy, a nationally prominent charity watchdog service whose purpose is to help donors make informed giving decisions.  This site gives you the information about their organization, the charities they rate, and their method of grading charities.

Give

Give is part of the Better Business Bureau Foundation.  It provides assistance in helping givers make intelligent giving decisions through their charity evaluation, various "tips" publications, and publishes a quarterly newsletter.

Just Give

"JustGive is a nonprofit organization whose mission is to connect people with the charities and causes they care about and to increase overall giving."