Grants.gov system houses information on over 1,000 grant programs and vets grant applications from 26 federal grant-making agencies and other agencies. NIH & HHS grants can be found here.
A free resource for federal grants, government grants and loans. Currently there are 2,422 federal grants and loans organized by sponsoring agency, applicant type, subject area and a convenient directory.
Annual catalog of all federal funding mechanisms, including grants. Use CFDA numbers for searching in Grants.gov. Formerly called the Catalog of Federal Domestic Assistance.