The Democratic Socialists of America is the largest such group in the United States (formed in 1982 by a merger of the New American Movement—a group I was in—and the Democratic Socialist Organizing Committee, a remnant of the old Socialist Party of America. Today the stated view of DSA (which has formally endorsed Sanders) is this:
Democratic socialists do not want to create an all-powerful government bureaucracy. But we do not want big corporate bureaucracies to control our society either. Rather, we believe that social and economic decisions should be made by those whom they most affect.