http://www.Givewell.org

“GiveWell is a nonprofit dedicated to finding outstanding giving opportunities and publishing the full details of our analysis to help donors decide where to give.

Unlike charity evaluators that focus solely on financials, assessing administrative or fundraising costs, we conduct in-depth research aiming to determine how much good a given program accomplishes (in terms of lives saved, lives improved, etc.) per dollar spent. Rather than try to rate as many charities as possible, we focus on the few charities that stand out most (by our criteria) in order to find and confidently recommend the best giving opportunities possible.”

http://www.Charitynavigator.org

“Charity Navigator works to guide intelligent giving. By guiding intelligent giving, we aim to advance a more efficient and responsive philanthropic marketplace, in which givers and the charities they support work in tandem to overcome our nation’s and the world’s most persistent challenges.”

http://www.Centreforeffectivealtruism.org

“Effective altruism is a growing social movement founded on the desire to make the world as good a place as it can be, the use of evidence and reason to find out how to do so, and the audacity to actually try.

As the organisation that coined the term, the Centre for Effective Altruism is a growing coalition of projects that put these ideas into practice in different ways. The Centre is based at its offices in the University of Oxford.”