Top MQL4 and MQL5 source codes based on user ratings - 3

This Expert Advisor (EA) implements a triangular arbitrage strategy between three currency pairs: EURUSD, USDJPY and EURJPY

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")

The DailyHighLow indicator is a versatile tool designed for MetaTrader 5 (MQL5) to display high and low price levels on a chart based on a specified timeframe. This indicator is particularly useful for traders who rely on key price levels for decision-making, offering flexibility through customizable timeframes and price calculation methods.

A professional script that automatically sets Stop Loss and Take Profit for all open positions based on a customizable Risk:Reward ratio. Perfect for traders who want to maintain consistent risk management across their trades.

Zigzag which changes wave direction based on price percentage change on the asset

This indicator builds a dynamic price channel using Gaussian smoothing to determine support and resistance lines. It calculates smoothed high and low price values for a given period, finds their extrema and displays three lines: upper resistance (maximum of smoothed high), lower support (minimum of smoothed low) and the middle line between them, forming an adaptive trading channel.

A JSON library that supports MQL4/MQL5

Horizontal Grid Controller with KeyEvents

The source codes written during the development of the library for creating multi-currency Expert Advisors that combine many instances of various trading strategies.

High and Low Line Indicator

Engulfing Bar Occurs below Ema moving Average that is rising - Buy Trade -

This service periodically checks swaps for predefined symbols and saves detected changes into CSV-files for further analysis and potential replay (not implemented here). Also it monitors and alerts swap changes of existing positions.

PrintXYZ() library to print massive information from the terminal.

A lightweight tool for manual scalping in MT5 using keyboard shortcuts

A simple strategy based on the signals of two indicators: Williams' Percent Range (WPR) and Bollinger Bands (BB). A position is opened only when the signals of both indicators coincide.

In Part 6 of the "MQL5 Programming for Traders", we will study a key component of the MQL5 language – trading automation. We will start with a description of the fundamental entities, such as financial instrument specifications and trading account settings. These are prerequisites for creating properly operating Expert Advisors.

Alligator beginner tutorial to learn how to code in MQL5

This is an indicator with a rainbow-like display, both for trend or pullback prediction.

The two moving averages crossover strategy is one of the most common trading strategies in the financial market. It is based on the use of two moving averages (usually long and short term) and signals an entry into a position based on their crossover.

The indicator draws an arbitrary second timeframe on the chart.

A volume oscillator is a useful technical analysis indicator that predicts the strength or weakness of price trends

This code does not trace the iatr() because the iatr() or this code is a more modern version. This code uses original smoothing, a kind of SMA and not wilder smoothing. The analysis of the two smoothings can suggest opportunities elsewhere

Modification of the standard indicator Fractal

This library simulates prop trading firm scenarios by resetting the account balance based on configurable profit and loss thresholds during backtesting, and logs reset results for analysis.

Translate risk percentages to the monetary figure based on the account balance

This MQL5 script exports candlestick data for various timeframes into a CSV file, capturing essential market information like open, high, low, and close prices. It analyzes each candlestick's characteristics, including body and wick sizes, while calculating additional metrics such as candle gaps. After processing the latest 21 bars, it notifies the user upon successful data export.

Marking the extreme highs and lows (OHLC) together with the extreme bid and ask prices

Unfortunately, I found that some brokers Changing the time on the server is a bit incorrect, which I didn't expect. and which surprised me a lot. Here is a script that anyone can use to check their broker.

Logger with the ability to log individual modules or code sections

Simple Expert Advisor with custom R-squared optimisation function

Dynamic VWAP level which can be averaged over multiple days

The Watermark indicator is lightweight and efficient, designed to display an informative watermark over the main MetaTrader 5 chart. It automatically shows the current symbol, chart time and asset description, allowing traders to customise their interface with style and convenience.

This is a Moving Average indicator based on Heiken-Ashi candles instead of raw market price.

Adaptive CCI - Commodity Channel Index with dynamically adjusting upper and lower limits based on market volatility. Eliminates fixed thresholds (like 100/-100) by using EMA-smoothed peaks and troughs, providing more reliable overbought/oversold signals tailored to each asset's current volatility. Perfect for identifying high-probability reversal points with adaptive confirmation levels.

This is a tester script that extends the standard MetaTrader 5 optimisation capabilities, allowing you to evaluate strategies according to complex user-defined criteria (with separation into in-sample and out-of-sample periods, advanced metrics and statistical tests).

simple atr supertrend with rsi filter

A tool to align the trading sessions names with broker server time, and local time

Function to convert server time from one broker's time zone to another.

Monitoring of memory leaks in the strategy tester

The default CCI in MT5 doesn't have the shift parameter. This script implements the shift.