The BBB has a user friendly search feature which can search by a specific business or business type, also searchable by using their contact information.
Biznar is a deep web search engine that returns high quality results by submitting your query to other search engines and collating, ranking and dropping duplicates in the results.
Articles pertaining to the financial crisis, development, macroeconomics, poverty reduction, trade, globalization, and more from the International Monetary Fund (IMF).
The Penn World Table is a "database with information on relative levels of income, output, inputs and productivity, with country and period coverage depending on the release."