PowerTrade
Offers streaming real time data, technical analysis shows relationship among markets, deviation from the predictions
http://www.angelfire.com/electronic/vtrade
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Excerpt:
... Statistical and mathematical models including stochastics (shown above) are employed. Data taken from June 17, 2000. Data, above, is shown in 20 minute sessions. PowerTrade software is supplied with one history file containing 5 days. Additional history is available.