These are volume based indicators put onto an oscillator by using SMA for most of them. Most volume based indicators are leading indicators so you may find a use for each of them. The WMA is a length of 21, as suggested by the original inventor of OBV. It is useful for crosses and determining future moves.
What's currently included:
OBV Oscillator, remade. The formula has been changed to smooth out the way OBV is calculated during a trending move
OBV Oscillator, original OBV formula.
Price Volume Trend Oscillator. Similar to OBV, except price is taken into account as well.
Price Volume Trend Oscillator, log.
Accumulation/Distribution. (close - low) - (high - close) / (high - low), then multiplied by volume
Chaikin Money Flow. Very similar to accum/dist except it was already made into an oscillator.