BizStats.com: Provides national business statistics and analysis.

Bplans: Over 60 free sample business plans.

Business Owner’s Toolkit: Tools to help you start, run and grow a small business.

Cost of Living Calculator

Cost of Living Comparisons

Entrepreneur.com: Offers information and advice for small businesses.

GreenBiz: Guides businesses to environmentally sustainable business practices.

Inflation Calculator

Online Chambers of Commerce

SCORE, Counselors to America’s Small Business: Free small business advice.

WSJ Startup Journal: Articles, discussions, and a “mini business planning” tool to get entrepreneurs started.