Volume moving average is an indicator based on Ninjatrader Volume Up & Down. It applies a choice of 10 differents moving averages (DEMA, EMA, HMA, LinReg, SMA, TMA, TEMA, VWMA, ZLEMA and WMA). The result is displayed as an "oscillator like" indicator. Buy and sell signals are given in many different ways, so it's up to you to choose the one that suits you best.
The Volume Price Trend (VPT) indicator combines price movement with volume to give a cumulative measure of the trend. It is similar to the On-Balance Volume (OBV) indicator but adds a weighting of the price change relative to the volume. This helps identify the strength of a trend by considering both price and volume together.