Acumen Fund
http://www.acumenfund.org
The Acumen Fund was established as a nonprofit organization to accelerate global change. The fund operates like a venture capital firm, identifying innovations with high potential to solve the tough issues of our time, whether they operate in the nonprofit or for-profit sectors, and then supporting these innovations with financial assistance, technical assistance and connections.

GlobalGiving
http://www.globalgiving.com/
GlobalGiving is a unique service that makes it possible for donors in the United States to make a difference by directly supporting community development projects in the developing world.

Global Exchange for Social Investing
http://www.gexsi.com/gsim_search.asp

Global Exchange for Social Investing
http://www.gexsi.org/
The Global Exchange for Social Investing (GEXSI) was created through a partnership between The Schwab Foundation for Social Entrepreneurship and Bain & Company to help social entrepreneurs with replicable models find the financial and in-kind support they need by identifying second-stage financing mechanisms and networking platforms. Through it’s website, GEXSI helps investors learn about the global exchange for social investment, a market for socially responsible investment opportunities worldwide.