GiveWell is a nonprofit organization that evaluates and recommends charities based on their effectiveness in improving lives. Founded in 2010, it focuses on identifying organizations that provide the most significant impact per dollar spent, primarily in global health and poverty alleviation. The organization conducts in-depth research to assess various charities, considering factors like cost-effectiveness and transparency. By providing detailed reports and recommendations, GiveWell helps donors make informed decisions about where to contribute their money, aiming to maximize the positive effects of their donations on those in need.