“I realised that by donating a large part of my future income to the most efficient charities, I really could save thousands of people’s lives. Since I already have most of the things I really value in life, I thought — why not?”
Toby Ord: Founder of Giving What We Can
A good example of an organization of utilitarians working to make the world better by giving to the most efficient charities.
The charity focuses on Third World Poverty as it's area of interest. It views poverty and poverty related deaths as easily understandable and preventable. It exposes popular myths about aid, gives recommendations for the most efficient charities and hosts general resources about charitable giving.
All members are required to make the pledge:
I recognize that I can use part of my income to do a significant amount of good in the developing world. Since I can live well enough on a smaller income, I pledge that from today until the day I retire, I shall give at least ten percent of what I earn to whichever organizations can most effectively use it to fight poverty in developing countries. I make this pledge freely, openly, and without regret.
10% is the minimum figure but many give more, for example, Toby Ord gives all income above basic living expenses.