Business

EDGAR (Electronic Data Gathering Analysis and Retrieval) is the U.S. Securities and Exchange Commission's free database of corporate filings and annual reports.

Provides data about nonprofit organizations

Company profiles and industry information. Free but registration is required.

NAICS is replacing the U.S. Standard Industrial Classification (SIC) system. The site provides all the major components of the 1997 NAICS manual, including correspondence tables, definitions and an index.

Detailed company credit ratings, rationales behind the ratings, and market analysis.