This guide identifies resources about the nonprofit industry. The focus is primarily on U.S. sources, but there is some international coverage included.
Rating & Monitoring
There are many private monitoring groups of nonprofit performance that can be used to assess specific charities.
Gives brief descriptions of the charities/nonprofits and their programs, funding sources, geographic location, and income/asset statements. GuideStar derives its information from 990 tax submissions to the IRS as well as directly from the nonprofit org's.