The International Monetary Fund (IMF) is an organization of 188 countries, working to foster global monetary cooperation, secure financial stability, facilitate international trade, promote high employment and sustainable economic growth, and reduce poverty around the world. The IMF monitors the world's economies, lends to members in economic difficulty, and provides technical assistance.
The World Bank (WB) is an international financial institution that provides loans to developing countries for capital programs. The WB is comprised of two institutions managed by 188 member countries: the International Bank for Reconstruction and Development (IBRD) and the International Development Association (IDA). The IBRD aims to reduce poverty in middle-income and creditworthy poorer countries, while IDA focuses exclusively on the world's poorest countries.
The Bank for International Settlements (BIS) is an international organization of central banks which fosters international monetary and financial cooperation and acts as a bank for central banks.