For private grants, you may want to check the Foundation Center's Foundation Grants for Individuals Online. It's a subscription based website ($9.95 per month) but their opening blurb only says that the database is ideal for "students, ...
A part of a series produced by The Huffington Post in celebration of #GivingTuesday, which will take place this year on December 3, Kathy Calvin and Henry Timms vouch that we are living in a new era of philanthropy.
Business Grant Application Process | Personal Government Grants