Contains information from Hoover's Company Profiles--40,000 global public and non-public companies; OxResearch--articles covering regional economic and political developments; US and Worldwide Industry & Market Reports from Barnes Reports--covering global industries in depth; and Snapshots--market research overviews on 40+ industries and 40 countries.
Covering over 24 million companies with information on public, private and non-profit entities, Reference USA is one of the foremost tools for business intelligence.
This site is useful for finding all quarterly and annual filings on a public company. You can search the SEC filings by SIC code, company name or ticker symbol.