The closest I can think of is GiveWell [1], but it is part of the broader effective altruism movement, so perhaps it won't meet your bar. [1]: https://www.give

The closest I can think of is GiveWell [1], but it is part of the broader effective altruism movement, so perhaps it won't meet your bar. [1]: https://www.givewell.org https://www.givewell.org