News/Comment:
Barron's Online
Bloomberg
CBS Marketwatch
CNNfn
Economist
Financial Times
InvestorsInsight
LewRockwell
Market Guide
MSN Money Central
Pimco
Wall Street Journal

Quotes, Charts, and More:
BigCharts
ETFconnect
Futuresource
InvestmentTools
Kitco Commodities
Options Detailed Quotes
Quote.com
SchaeffersResearch
Tradingmarkets.com
Value Line
Van Tharpe Institute
Yahoo Finance

Fundamental research:
Alacritude
BestCalls
Briefing.com
EDGAR
Hoover's On-line
MagicFormulaInvesting
Morningstar
SoftwareNorth
Standard and Poor's
TrustnetUK
World Gold Council
10K Wizard

Investor Education:
Fund Alarm
Investing in Bonds.com
Quicken.com

International Finance:
ADR.com
Central Europe
Intltrader.com
Site-by-Site
TheStreet.com

Government Sites:
Congress.org
Federal Reserve
NASD
SEC
Supreme Court
Treasury Department

Exchanges:
Amex
CBOE
CBOT
CME
London Stock Exchange
Nasdaq
NYSE

Rates-Mortgages-Cards:
Bankrate.com
BestRate
CardWeb
E-Loan
QuickenMortgage

Tax Planning:
Fairmark Press Tax Guide
IRS
Kiplinger Tax Cut
Roth IRA
Tax Prophet
Taxsites.com
TurboTax TaxCenter
Will Yancey
401kafe

Niches:
Biospace.com
IPO Monitor
Ludwig von Mises Institute
National Assoc. of R.E.I.T.

Insurance:
Ameritas
Insure.com
InsWeb
Intelliquote
InsureMarket
ReliaQuote

Estate Planning:
Lawyers.com
Legal Info Institute
Rushforth

College Planning:
College Board
Fastweb.com
Financial Aid
Kaplan
Princeton Review
SavingForCollege.com