Grants.gov: find, apply for, and track federal grants.
Funding Information Network
Foundation Directory Online – more than 90,000 foundation profiles of all active U.S. foundations, as well as an extensive file of recent grants awarded by the nation’s top funders. (Available only within the Ashtabula building.)
Foundation Maps Professional – an interactive mapping tool designed for grantmakers, policymakers, researchers, academics. (Available only within the Ashtabula building.)
Grantspace.org: GrantSpace is a service of the Foundation Center that provides easy-to-use, self-service tools and resources to help nonprofits worldwide become more viable grant applicants and build strong, sustainable organizations.