Below are several databases and websites that provide important information about country data, customs, etiquette, culture and doing business across the world.
The Hofstede Centre - Strategy - Culture -- Change
"Insights into national and organizational culture" by Geert Hofstede, authority on workplace influenced by culture.
International Business Etiquette, Manners & Culture
Select country guides using Geert Hofstede's Analysis.
Country Commercial Guides (US government)
Free from the U.S. government. Each report is designed to help business people understand the basic of doing business in other countries.
Business Ready (World Bank Group)
The World Bank's reference tool for comparing the cost of doing business in countries around world. Their methodology.