GiveWell does extraordinarily rigorous research on which charities and causes will do the best with your money—the best we’ve seen. They make sure that their recommended charities do what they say they do, that what they say they do is effective, and that they have room to use your donation productively.

Giving What We Can is a society of people who have pledged to donate 10% or more of their income to the most effective causes. It also conducts it’s own research into charity effectiveness.

80,000 Hours researches how we can choose careers that will have the most impact. They also provide one-on-one career coaching for aspiring altruists.

The Life You Can Save, an offshoot of Peter Singer’s book by the same name, is the largest effective altruist organization. Its 16,000 members have each pledged to donate at least 1% of their income to effective charities.

Animal Charity Evaluators investigates the most effective ways of reducing non-human animal suffering. Since there are many non-human animals living in extremely painful conditions on factory farms, animal suffering could be a very highly effective altruistic cause.

The Centre for Effective Altruism is an umbrella orginzation running 80,000 Hours and Giving What We Can; Effective Animal Activism and The Life You Can Save are also affiliated.

The Future of Humanity Institute uses the tools of mathematics, philosophy, and science to research big-picture questions about the future of humankind, including the altruistic potential of working towards improving the lives of people in the far future.

The Centre for the Study of Existential Risk (CSER) was cofounded by Lord Martin Rees, Huw Price and Jaan Tallinn (founder of Skype) to study and reduce the risks of an existential catastrophe.

The Future of Life Institute has a reasonably similar role, and in January 2015 received a donation of $10 million from Elon Musk and in the same month, Nick Bostrom (from FHI) joined Stephen Hawking, Max Tegmark, Elon Musk, Lord Martin Rees, Jaan Tallinn among others, in signing the Future of Life Institute‘s open letter warning of the potential dangers associated with artificial intelligence.

The Center for Applied Rationality runs 4 day workshops on, no surprises here, rationality. They often give significant discounts to effective altruists, and a lot of people report benefiting from doing one.

Effetive Altruism Ventures is a VC fund designed for incubating projects that create a lot of social value.

.impact is similar to EA Ventures in that it incubates high yield projects, but on a smaller scale. Think, instead of creating new non-profits, creating a useful website, pamphlet etc.

Charity Science exists to experiment with outreach methods and find those that work, and do them.

Raising for Effective Giving, a project from GBS Switzerland, encourages touring poker players to donate 2% of their winnings (which sometimes totals tens of millions).

Additionally, many individual writers and other sites have interesting material on effective altruism:

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