Grants.gov
Register to receive automatic notifications of new funding opportunities:
https://www.grants.gov/web/grants/manage-subscriptions.html
Types of funding opportunities you’ll find posted on Grants.gov:
Opportunities for federal funding only. Grants.gov serves as a central repository for discretionary funding opportunities for all 26 federal grant-making agencies, and houses information on more than 1,000 funding opportunities.
Other resources available on the Grants.gov site:
You can download application packages and application instructions, submit application packages, track applications, receive training to learn how to use Grants.gov, and obtain troubleshooting help with the Grants.gov system.