Excellent databases exist to help you quickly identify the funding programs that are the best match for your current and future projects.
Grants.gov: all federal grants opportunities are in a single database.
The Community of Science database contains thousands of grant opportunities from federal agencies and foundations. You may create a user account, define as many searches as you want, and receive weekly emails containing new items that fall within your searches.
NIH's RePORTer (formerly CRISP (Computer Retrieval of Information on Scientific Projects)), a database of federally funded biomedical research projects
Minnesota Grantmakers Online Deluxe (requires a U of M username/password)
The University of Minnesota's Sponsored Projects Administration subscribes to SPIN (Sponsored Projects Information Network). SPIN allows you to search by applicant type, award type, objectives/title/synopsis keywords, sponsor type, target groups, and other parameters.
The University of Minnesota Libraries subscribe to the Foundation Directory Online.
National Center for Biotechnology Information (NCBI)