- North American Industry Classification System (NAICS)
The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.
- IBISWorld US
Industry Reports
Features over 700 reports on U.S. industries written at the 5-digit level of the North American Industry Classification System (NAICS). Each report of about 25-30 pages uses Michael Porter's "Five Competitive Forces" framework.