Heiken Ashi is a very well known indicator.
One of the variations that is actually improving the indicator is the "smoothed" version. The logic behind the smoothed version is simple:
Instead of using "raw" prices" for calculations, Heiken Ashi Smoothed indicator is using smoothed/filtered/averaged prices instead.ADXVMA Binary
ADXVMA indicator made as "binary" having only two values (+1 for "trend" up and -1 for "trend" down).
This indicator is a variation of a well known WPR (Williams Percent Range) indicator with 4 WPR values combined into "candles".Volume Zone Oscillator
Volume Zone Oscillator indicator is based on the "In The Volume Zone" article by Walid Khalil and David Steckler, and can be classified as both trending and oscillating (non-trending) in its design.