The following databases contain resources for federal funding. They are most useful for faculty and staff, although there are some valuable opportunities for graduate students and postdoctoral scholars as well.List of Federal Databases
Grants.gov is the portal for government funding opportunities. Most federal agencies will soon allow direct application for funding opportunities through this website.
FedBizOpps lists all federal government contracting opportunities that exceed $25,000, including major solicitations, contract awards, subcontracting opportunities, and other procurement information.
The Federal Register is a publication of Congressional and other federal agency documents, including funding announcements.
Catalog of Federal Domestic Assistance (CFDA)
The CFDA is a government-wide compendium of federal assistance programs.