Communities adjacent to effective altruism are groups related in one way or another to the effective altruism community. Possible examples of such communities include the rationality community, the forecasting community, and the progress studies community;[1] and, historically, the Philosophic Radicals, the Society for the Diffusion of Useful Knowledge, and Fabianism, among others.
Mac Aulay, Tara (2016) The effective altruism ecosystem, Effective Altruism Global.
network building | social and intellectual movements
Carey, Ryan (2021) Name for the larger EA+adjacent ecosystem?, Effective Altruism Forum, March 18.