EIU Economist Intelligence Unit
Provides excellent coverage for all countries.
IMD World competitiveness online - Analyzes and ranks the ability of nations to create and maintain an environment that sustains the competitiveness of enterprises.
CIA World Factbook
Provides information on the history, people, government, economy, geography, communications, transportation, military, and transnational issues for 266 world entities.
globalEDGE Site from Michigan State University providing country and industry profiles.
Doing Business Provides objective measures of business regulations for local firms in 183 economies and selected cities