NAICS Classification System in North America and Global planning Guide - Management Review

SIC and NAICS Codes
Provides concise definitions of SIC and NAICS codes, including why we have them and where you can find them.
Table of Small Business Size Standards
Provides an industry-specific table of Small Business Size standards according to the NAICS system of classification.
Company Information and NAICS: Harris InfoSource
businesses. Download company information including NAICS, SIC codes and more. Free 7-day trial. Get unlimited access to company profiles for all U.S.
Provides a complete index of SIC/NAICS business codes organized by aphebetically by industry.
Hoover's: Business Intelligence
Provides in-depth business and public/private company information, financials, competitors , industry overviews, officers, including profiles and news.
NAICS Association
Official page of the NAICS Association provides a complete list of SIC and NAICS codes, reference files, manuals and reference software.
North American Industry Classification System
The NAICS has replaced the US Standard Industrial Classification (SIC) system and was developed jointly by Canada, the US, and Mexico.
Nb of rev= 7 - Software for Competitive Intelligence