Gomez Advisors' Internet Broker Scorecard http://www.gomez.com/
Keynote Systems' Online Brokerage Index http://www.keynote.com/
The Motley Fool http://www.fool.com/ Wide range of investment advice.
Offers a historical beta summary scrren for volatility data going back one year.
Screen more than 4000 US equities and industry groups using more than 100 quantitative variables.
Computer models help forecast individual stocks and the broad market.
"Industry Value" screen lets you see if a stock is priced fairly relative to others in its group.
Yahoo! Finance http://www.yahoo.com/
Free, all-purpose screen features basic quantitative tools.