Alligator Technical Indicator is a combination of Balance Lines (Moving Averages) that use fractal geometry and nonlinear dynamics (B. Williams: "New Trading Dimensions: How to Profit from Chaos in Stocks, Bonds and Commodities").
Lips, Teeth and Jaw of the Alligator show the interaction of different time periods. As clear trends can be seen only 15 to 30 per cent of the time, it is essential to follow them and refrain from working on markets that fluctuate only within certain price periods.
When the Jaw, the Teeth and the Lips are closed or intertwined, it means the Alligator is going to sleep or is asleep already. As it sleeps, it gets hungrier and hungrier — the longer it will sleep, the hungrier it will wake up. The first thing it does after it wakes up is to open its mouth and yawn. Then the smell of food comes to its nostrils: flesh of a bull or flesh of a bear, and the Alligator starts to hunt it. Having eaten enough to feel quite full, the Alligator starts to lose the interest to the food/price (Balance Lines join together) - this is the time to fix the profit.

Alligator indicator
Calculation:
MEDIAN PRICE = (HIGH + LOW) / 2
ALLIGATOR'S JAW = SMMA (MEDIAN PRICE, 13, 8)
ALLIGATOR'S TEETH = SMMA (MEDIAN PRICE, 8, 5)
ALLIGATOR'S LIPS = SMMA (MEDIAN PRICE, 5, 3)
where:
Translated from Russian by MetaQuotes Ltd.
Original code: https://www.mql5.com/ru/code/9
Accumulation/Distribution
The Accumulation/Distribution Indicator is determined by the changes in price and volume.
Plombiers - oscillator in the channel.
Sometimes this is useful - to observe the behavior of the oscillator in the channel. Greatly simplifies the evaluation of the situation.
Bollinger Bands ®
The Bollinger Bands ® Indicator (BB) is similar to Envelopes. The only difference is that the bands of Envelopes are plotted a fixed distance (%) away from the moving average, while the Bollinger Bands are plotted a certain number of standard deviations away from it.
Bears Power
The Bears Power Indicator measures the balance of the bears strength.