GoLocalBot. The project is closed - Platform for volunteers, NGOs, activists and crowdmapping.
Donorhut - Donorhut offers cloud fundraising software for charities and non-profits of any size.
GivingWay - Travel the world, do some good.
Txt2Give - Txt2Give helps churches, non-profits, schools, alumni associations, and political campaigns receive donations with text messages.
Catchafire - Use your professional skills to help charities
Little Green Light - Illuminating Data. Advancing Nonprofits.