I've been developing a "Footprint" indicator, similar to Market Delta, or Sierra Charts. It is now ready for release, and available on my blog.
The indicator attempts to classify the tick stream into buy/sell. These buy/sell classifications are at specific price levels, and the indicator accumulates these over the period of the charts' candle or bar. The results are displayed as text overlayed onto the chart, and there are various display and formatting options available for this.
You can read more on my blog.
Here's some screenshots of the indicator in action.
This chart shows the buy/sell ticks. The value before the 'x' is buy, the value after the 'x' is sell. The colour relates to the delta (i.e. buy - sell); net buying is green, net selling is red, and the colours fade to neutral as the delta approaches 0.
This chart shows just the delta (i.e. buy - sell).
This chart shows the total tick volume at price.
This indicator can be used for scalping, as well as more precise entries and exits. It is particularly useful when combined with support/resistance levels.
The indicator is for MarketScope. I am currently charging a small amount for this indicator. You can order it here.