The Group of 77 (G-77) was established on 15 June 1964 by seventy-seven developing countries signatories of the “Joint Declaration of the Seventy-Seven Developing Countries” issued at the end of the first session of the United Nations Conference on Trade and Development (UNCTAD) in Geneva.
A bit dated. Use for definitions, background. Global Exchange is an international human rights organization dedicated to promoting social, economic and environmental justice around the world.
""...an independent policy watchdog that monitors the work of the United Nations and scrutinizes global policymaking. GPF works particularly on the UN Security Council, the food and hunger crisis, and the global economy.""