The Grantsmanship Center---"The non-profit sector's source of training and funding information."
GranstNet---GrantsNet provides a variety of Department-wide grants policies governing the award and administration of grant activities, publishing these in grants policy directives, regulations, and/or manuals.
GuideStar--- GuideStar is a searchable database of more than 620,000 nonprofit organizations in the United States. This site also makes available the 990 IRS Forms.
NonProfit Gateway---"A network of links to Federal government information and services"
Notices of Funding Availability---announcements that appear in the Federal Register, printed each business day by the United States government, inviting applications for Federal grant programs