Giving Multiplier is a donation platform that adds 9% to 90% on top of donations to any charity on condition that donors give a percentage (at least 10%) to an effective charity from their list of expert recommendations. It was created by the psychology researchers Lucius Caviola and Joshua Greene at Harvard University based on their research.^[1] The organization has been funded by Effective Altruism Funds, Founders Pledge, and Meta-Charity Funders.