Top MQL4 and MQL5 source codes based on user ratings - 2

This library is an updated version of the ErrorDescription.mqh library published by MetaQuotes, with some features included.

An example of a bot with an embedded machine learning model that is trained in python and saved in ONNX format.

This script helps traders understand the distribution and breadth of candlesticks over a specific period, which can be useful in making trading decisions such as which Take Profit or Stop Loss to use based on historical values.

Correlation Coefficient" indicator

A powerful and feature-rich JSON library for MQL5, designed to bring a modern development experience similar to Python/JS

Overlaying multiple stochastics with different periods will help beginner traders.

Complete Telegram integration for MT5. Send trading signals, screenshots, reports & alerts to Telegram channels. Includes queue system, multi-channel support & risk management.

The indicator allows you to estimate the probability that the price has reached its maximum or minimum.

It is a script to display the time remaining until next bar arrives.

Records ticks in real ticks mode and reads them in maths mode calling your strategy with each tick.

Monitoring memory consumption.

A quantitative machine learning envelope that utilizes Nadaraya-Watson kernel regression math to dynamically project statistically significant mean-reversion zones without relying on traditional standard deviation.

A multi timeframe version is available with colors for orientation, for developers or profitable traders for free. Offer under conditions. Other multi timeframe indicators are also available.

This indicator helps user estimate the potential price movement for the current day, based on 20 days historical data and market trends.

WeekDays indicator displays Day Of Week, Week Of Year, Day Of Year or Bar Index in the Data Window, and optionally in labels on the chart.

ZigZag SNR Detection identifies support and resistance levels using ZigZag pivot points.

iRSI Very Simple A multi timeframe version is available with colors for orientation, for developers or profitable traders for free. Offer under conditions. Other multi timeframe indicators are also available.

Source codes written in the process of developing a library for creating multi-currency Expert Advisors combining multiple instances of different trading strategies.

The "Net Volume" indicator shows the volume taking into account the pressure of sellers and buyers

Volatility Stop - indicator of stop levels by volatility

The goal is to show a code that shows the calculation of the ATR with Wilder smoothing

This script is a reference solution for mapping symbol names configured by users in MetaTrader 5 EAs or scripts to the actual names provided by the broker. It uses the Levenshtein distance algorithm to automatically identify the most similar symbol in Market Watch. Ideal for developers facing compatibility issues with prefixes or suffixes in symbol names. It is a customisable starting point to suit any specific need.

Draw the wicks (thin lines): Draw a vertical line from the lowest price to the highest price of each candle (this is called a "wick")

This expert is a system to help any trader to make a grid of orders.

A combination of many known indicators

ZigZag BOS CHoCH Detection indicator is based on the original MetaQuotes ZigZag algorithm and extends it by detecting and marking market structure events. It tracks recent ZigZag swing points and automatically identifies Break of Structure (BOS) and Change of Character (CHoCH) using pivot trend confirmation. BOS and CHoCH levels are drawn directly on the chart with labeled horizontal lines for clearer price action analysis.

Compression of tick data for storage in a compact form up to 3.5 times more compact than .tcs MQ files. And for fast work with them, because reading 3 bytes takes less time than reading 60 bytes of MqlTick structure.

This EA is intended to test a popular trading strategy. My own backtest shows that this strategy does not work as it was intended

A compact on-chart dashboard that monitors live spread behavior, tracks rolling Min/Max/Avg, and warns on abnormal spread spikes (news, low liquidity, rollover) using adaptive or fixed thresholds with optional alerts.

Multi-Mode Logarithmic Transform Indicator.

Profit/loss calculator of positions (open orders)

The FMO indicator is a technical analysis tool that measures "trend age" using fractal cycles. Its purpose is to help traders determine whether a trend is still young (safe to follow) or over-aged (high risk). A Conceptual Synthesis of Psychology, Sociology, and Life Cycles This work presents a deep analysis of human life through a numerical matrix (3, 7, 39, 49), using it as a conceptual lens for understanding psychology, sociology, and developmental cycles. It is not a conventional scientific framework. Rather, it is a synthesized model — integrating esoteric, psychological, and sociological perspectives into a unified cyclical structure. The goal is to organize and interpret human development through layered, interacting cycles.

Trade using MA. An easy indicator to identify the trend direction on a specific timeframe.

A multi timeframe indicator which features RSI divergence. + Buy/Sell signals Inspired from trading view.

Self-Aware Trend System (SATS) is an advanced MQL5 indicator that combines an adaptive SuperTrend engine with a Trend Quality Index (TQI) dashboard, offering dynamic signal detection, risk management levels, and self-learning calibration for smarter, more reliable trade entries.

A digital signal processing (DSP) engine that applies the Discrete Fourier Transform (DFT) to market data, isolating the dominant cyclical frequency to project turning points and eliminate phase-lag.

With these classes you can create and test your signals runtime.

Stochastic beginner tutorial to learn how to code in MQL5

A Marubozo is a long-bodied candlestick with no shadow, from the Japanese word meaning "close-cropped". Candlestick charts look at the opening and closing price on a single day and are used by technical traders.

Hidden Engulfing Candlestick Pattern