Check out this website... They seem to have an indicator that measures the buying/selling pressure which correspond to the support/resistance level. http://www.ftacademy.com/pages/pressure.htm http://www.ftacademy.com/pages/images/pressure.jpg
Quotetracker has pressure bars that you can add to the chart to show you the buy/selling pressure. Their indicator page says: Pressure Bars This indicator shows the ratio of the volume of trades going off at ask vs. trades going off at bid for each period of time.