The Klinger Oscillator Indicator MT5 is a useful and popular free Forex indicator for the MT5 platform. It does this by plotting a histogram that compares the sum of two moving averages of a security’s price. The Klinger Oscillator Indicator MT5 is a popular and free indicator that is widely used by traders around the world. It is easy to use and understand, and can be a useful tool in helping traders identify potential trading opportunities.