Classification Systems
- NAICS and SIC Correspondence TablesA table to help you determine the North American Industrial Classification System code if you know a company's SIC code, or vice versa. Users may also search by subject.
General
- Business.govThe Official Business Link to the U.S. Government
- CEO ExpressBusiness and news-related links.
- Glassdoor.comCompany information including salaries, interview questions, and more.
- globalEDGE.Your Source for Global Business Knowledge
- INSIDERInfoInformation on 75,000+ companies, with links to websites (if available). From Lycos.
- MarketResearch.com(free registration required)
- Vault.com Industry OverviewsRegistration required
- Yelpconsumer feedback
Non-Profits
- GuideStarInformation for researchers on non-profit businesses. Free registration allows basic searching.
Patents & Trademarks
Securities and Financials
- EDGAR: Filings with the SECEDGAR site - financial statements that companies filed with the Securities & Exchange Commission. 1994 - present only.
- SEDARSimilar to the USA's EDGAR database, but for Canadian public companies: publicly accessible information and documents filed with the securities commissions by Canadian public companies and mutual funds as well as related third parties.
- U.S. Securities and Exchange Commission.Laws and rules for protecting investors and maintaining the integrity of the securities markets. Provides quick links to much of the information to accountants, broker-dealers, EDGAR filers, founds and advisers, municipal markets, and small businesses.
Statistics
- BigCharts.Historical, and current investment charting and research.
- Massachusetts Labor and Workforce Development.Statistics on unemployment and labor in Massachusetts.
- Statistabasic statistics are free.