Association of Small Foundations provides information about all aspects of philanthropy to foundations having five or fewer staff.

Bolder Giving inspires and supports people to give at their full lifetime potential by offering stories of extraordinary role models and providing practical tools for effective giving.

Confluence Philanthropy is a network that builds capacity and provides technical assistance to enhance the ability of foundations and non-profits to align the management of assets with organizational mission to promote environmental sustainability and social justice.

Council on Foundations is a membership association that provides national support services for foundations and their advisors, including conferences, publications, affinity groups and regional associations of grantmakers. COF Guide to Philanthropic Resources provides a comprehensive resource list. Click here to download Council of Foundations' Handbook

Foundation Center maintains a comprehensive database on U.S. grantmakers and their grants; issues a wide variety of information resources; conducts and publishes research on trends in foundation growth, giving, and practice; and offers an array of educational programs for grantmakers as well as grantseekers, researchers, policymakers, the media, and the general public.

Grantmakers for Effective Organizations is a membership organization that identifies and promotes grantmaking strategies and practices that contribute to grantee success through conferences, peer learning, research publications, and a web-based resource library.

Grantmakers Without Borders A resource and forum on international giving.

GuideStar is a national database that provides programmatic and financial information about more than 1.8 million IRS-recognized American charitable nonprofit organizations, including copies of their IRS 990 and 990-PF tax returns.

Independent Sector is a national association of foundations, corporations and nonprofit organizations that focuses on tracking and promoting volunteering and giving in the U.S. Its Web site provides information about trends in the nonprofit sector and updates on public policy issues that impact individual donors, foundations and nonprofit organizations.

National Center for Family Philanthropy provides information to support the growth of effective family philanthropy.

National Network of Consultants to Grantmakers provides a learning community and a forum for open discussion among consultants dedicated to strengthening philanthropy. NNCG provides a searchable directory of its members to foundations who are seeking to engage a consultant.

The Nonprofit Good Practice Guide provides comprehensive information on effective nonprofit management and innovative practices for both grantmakers and grantseekers. It includes nearly 7,000 glossary terms and links to articles organized within topics such as philanthropy and giving trends, grantmaking basics, evaluation and reporting, ethics and accountability, and advocacy and legislative issues.