Sponsors for contract research and development include a range of government agencies and private companies. Government agencies are required to advertise all calls for CRAD proposals on the Federal Business Opportunities web page (www.fbo.gov) and grants on Grants.Gov. Agencies will also list opportunities on their own web site, so if you are looking for funding for a particular agency, their web site is a good place to go and monitor. Commercial companies sometimes announce research on their company websites, but often go directly to a source, or fund someone who has approached them.
Though this site will also list advertised commercial opportunities for contract research and development, it will primarily focus on government listings. Read the Broad Agency Announcements, SBIR/STTR and Grants pages on this blog for more information on finding funding opportunities.