Study of Signals

[j.c.]

I suppose if you can predefine stocks within their 5 and 10dma that would be a start. Stockcharts has predefined Continuation Patterns and Doji (Dragonfly & Gravestone) which could indicate a sideways pattern but you'd have to look at the chart to determine how long its been trading that way.

Candlestick Patterns
http://stockcharts.com/def/servlet/SC.scan

You can define your own searches here:
http://www.smallcapcenter.com/tools_technicalSearch.asp?page=ANALYTICSSEARCH_IN.ASP