The World Integrated Trade Solution (WITS) is a software program that retrieves information on world trade and tariffs, which is collected from organizations like the United Nations Statistical Division (UNSD), Commodity Trade (UN Comtrade), the United Nations Conference on Trade and Development (UNCTAD) Trade Analysis Information System (TRAINS), and the World Trade Organization's (WTO) Integrated Data Base (IDB). Free registration is required to access database and some data requires a subscription.