Global consulting firm conducts useful research on various international aspects of business.

Respected World Bank project offering publications & comparative data on business regulations & their measurement for countries around the world (2002-)

Global accounting firm offers a series of up to date reports on the global attractiveness of countries & regions to inward FDI.

Useful portal to international business resources. Maintained by Michigan State University.

Useful publications & indexes such as the JLL Global 300 indicating which cities are hot spots for investments.