USAGov for Nonprofits Contains information on grants, loans, management and operations, and tax information from the U.S. government for nonprofit organizations.
Foundation Center Comprehensive information on private, corporate, and community foundations; public charities; the fund-raising process; and writing grant proposals. Click on the link to Gain Knowledge to search their Catalog of Nonprofit Literature and locate their research studies.
Independent Sector Coalition of U. S. charitable and philanthropic foundations and corporate-giving organizations. Web site contains some free research publications, public policy statements, and accountability information for organizations and nonprofits.
Council on Foundations A nonprofit membership association of grantmaking foundations and corporations. Many of their research report and white papers are available on their site.
IRS 990 Forms
Charities Bureau (NYS Attorney General) Database of charities and fundraising professionals in NYS. For charities, links are given to filed NYS paperwork, such as 990 forms.
Guidestar Provides access to 990 forms, as well as reports and some analysis to non-profits efficiency. Registration required to use.
ProPublica Non-Profit Explorer Allows searching of all 990 forms filed with the IRS since 2001. Downloading allowed, and multiple search options given.