Angel Resource Institute
The Angel Resource Institute (ARI) is a United States-based nonprofit organization that carries out research and education activities related to the field of angel investing. It was created in 2005 by the Ewing Marion Kauffman Foundation as a purely charitable sister organization to the Angel Capital Association (ACA), previously founded by Kauffman, which is a not-for-profit (although not charitable) organization representing the leading angel investment groups in North America.