These major federal agencies provide search engines or pages within their sites to assist you in finding appropriate divisions that may be interested in funding your research.
NSF funds approximately 20 percent of all federally supported basic research conducted at America's colleges and universities.
The primary funder of biomedical research related to human health and disease.
Powerful Federal Bid Alert System A. Point-of-entry for Federal government procurement opportunities over $25,000. Search, monitor, and retrieve product and services contract awards, procurement invitations, and subcontracting leads solicited by the Federal government. See also: Federal Business Opportunities, a direct link with limited search capability (Free)