.Online Brokers    
Invest and trade online. (noted is the minimum required to open a basic trading account)

American Express - no minimum.. access analyst reports, consult amex financial advisors.
Ameritrade - $2,000.. offer flat-rate $8 trades, customizeable stock alerts.
BUYandHOLD - no minimum.. offers a variety of accounts, resources, and stock research.
CharlesSchwab - $5,000.. mega-brokerage for beginning and experienced investors.
CSFBdirect - no minimum.. all types of accts, comprehensive quotes and research.
Datek Online - no minimum.. sixty-second trade execution, 3rd party research available.
E*Trade - $1,000.. mega-brokerage, online banking also available.
Fidelity.com - $2,500.. complete brokerage, access to 1000s of top mutual funds.
financialcafe.com - no minimum.. securities trading with planning and education centers.
Firstrade - no minimum.. deep discount trading of stocks, options, and mutual funds.
FOLIOfn - no minimum.. flat monthly fee, create customized stock portfolios.
Harris InvestorLine - no minimum.. stocks, mutual funds, and ira's; quotes and research.
JB Oxford - $2,000.. trading accounts, professional personal brokers available.
Merrill Lynch Direct - $2,000.. complete trading, research from award-winning experts.
MorganStanley - $2,000.. online trading, 1000s of mutual funds, in-depth analyst research.
My Discount Broker - no minimum.. trading, research, and financial planning.
Net Investor - no minimum.. stocks, options, mutual funds, and fixed income.
Quick & Reilly - no minimum.. personal consultants, integrated trading and banking.
rjt.com - no minimum.. real-time trading and quotes, wireless trading available.
Scottrade - $500.. discount trading of stocks, mutual funds, and bonds.
ShareBuilder - no minimum.. accounts geared for automatic periodic investments.
Strong.com - no minimum.. full service brokerage, emphasis on strong's mutual funds.
TD Waterhouse - $1,000.. brokerage accounts, mutual funds, banking and tax services.
TRowe Price - $2,500.. full service brokerage, personal advisory services.
WFN.com - no minimum.. women's financial network; trading accounts for women.
WR Hambrecht+Co - $2,000.. full service brokerage, auction service for shares of ipo's.

B. Popular Investing Resources    
Advice and information for better investment planning.

Barchart.com - data.. technical analysis, charts, for stocks and commodities.
BestCalls - audio.. listen to corporate conference calls; earnings, projections.
BigCharts - data.. by cbs marketwatch; comprehensive investment research.
Briefing.com - mega-site.. fee required; live u.s. market analysis, expert commentary.
ClearStation- mega-site.. from e*trade; tracking portfolios, community, analysis.
FinPortfolio.com - planning.. personal portfolios, analysis and tools to maximize returns.
Fool.com - mega-site.. free registration; investing and personal finance supersite.
Investing for Beginners - advice.. helpful site for new investers, interviews, articles and more.
Investopedia - education.. dictionary of investing terms, useful tutorials, and articles.
InvestorGuide - mega-site.. online investing guide; quotes, charts, news, portfolios.
Investors.com - ezine.. investor's business daily; power tools and learning center.
Kiplinger - ezine.. money management strategies; tools, investing, spending.
Lycos Finance - data.. membership fee req'd for some services.
Morningstar.com - mega-site.. stock and fund research, portfolios, editorial commentary.
Multex Investor - research.. for serious investors, fee required for some material.
Netstock Direct - research.. part of ShareBuilder, reseach direct investing plans.
ProphetFinance.com - data.. power tools for investors; downloadable financial browser.
Quicken Investing - mega-site.. investing research, personal portfolio tracking, and news.
Silicon Investor - resource.. by infospace; market analysis, news, commuity boards.
SmartMoney.com - mega-site.. news, tools, resources, learning, and more.
Standard & Poor's - data.. independant financial research and analysis.
Street Side Investor - ezine.. objective and honest articles on a wide variety of subjects.
Wall Street City - mega-site.. fee req'd for some services; research, news, portfolios.

C. Specialty Resources   
Resources dedicated to a specific aspect or type of investing.

401k.com - 401k's.. part of fidelity.com; education center about 401k's.
Kitco - precious metals.. daily market reports, news updates, and research.
Optionetics.com - options.. discussion boards, learning, market data, and more.
OptionInvestor.com - options.. fee required; option market analysis and recommendations.
optionsXpress - options.. online options and stock broker, quotes, and more.
Pennystocks.net - penny stocks.. education on the ins and outs of these high-risk stocks.
Platts - energy.. free and premium services; energy industry coverage.
RedChip.com - small cap.. fee required for most research; small cap stocks.
SchaeffersResearch - options.. professional tools and research for options trading.
smallcapcenter - small cap.. supersite for small cap stocks, indicies, news, and analysis.
SNL Securities - industry specific.. research banking, energy, real estate, other industries.
SocialFunds.com - watch dog.. social and environmental research on 1000+ companies.

D. Mutual Fund Sites    
Invest in mutual funds online or research fund performance.

American Century - seller.. four families of funds, advanced investor guides.
Brill.com - resource.. news, profiles, analysis, and q&a for the individual investor.
CNBC.com Funds - resource.. from msn; news, articles, calculators and research tools.
Janus - seller.. equity, income, and money market funds.
MAXfunds - resource.. focused research info on new and small mutual funds.
MFEA.com - resource.. mutual fund education alliance; huge fund info center.
Mutual Funds Central - resource.. by internet.com; specialize in technology funds.
Standard & Poor's Funds - resource.. research over 62,000 funds from 52 countries.
Vanguard Group - seller.. mutual funds and retirement accounts, planning center.

. Bond Sites    
Research bond markets and invest online.

Bond Talk - resource.. community for bond investors; daily roundup, analysis.
Bondpage.com - accounts.. $25,000 minimum; largest selection of fixed income securities.
Bonds Online - resource.. research center for individual and institutional investors.
BradyNet.com - resource.. free registration; emerging markets bond center.
CNNfn BondCenter - resource.. from cnn and money.com; various bond rates and information.
eBondTrade - accounts.. no minimum; municipal bond buying, selling and research.
US Savings Bonds - resource.. information, interest calculator, faq's, and more.

. IPO Sites    
IPO alerts, research, and news.
Alert-ipo! - notification.. part of internet.com; fee required, detailed email ipo alerts.
IPO Home - resource.. up-to-date news, upcoming IPOs and pricings, and much more.
IPO Monitor - resource.. recent ipo pricings, filings and withdrawals; performance stats.
IPO.com - resource.. recent pricings, vc news, and company bios.
IPOfn Online - resource.. free registration; research, tools, and commentary.
IPOSyndicate.com - accounts.. allows accredited investors access to pre-ipo opportunities