The World Bank
The World Trade Organization
International Monetary Fund
United Nations General Assembly
International Criminal Court
then ofc there's direct trade restrictions, cargo embargo, etc imposed by country upon country, threats to shut down aid etc...
and then ofc there's grassroots movements like Ocuppy Wall Street, Boycott Divest Sanction, etc aimed at specific causes against large and believed to be "too big to fail" (not so anymore) corporations and countries and their policies etc.