Guidestar Premium:provides mission, program, and financial information on 1.8 million nonprofit organizations. Data includes revenue tables, expense tables, and balance sheets, as well as organization reviews, annual reports, key personnel, and access to IRS 990 Forms.
Nonprofit Times:delivers news, business information and original research on the daily operations of tax-exempt organizations.
Nonprofit Virtual Library: focuses on nonprofit directories and other web sites (over 100 in all) providing advice or information about running nonprofits.