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

This is an indicator that identifies Wolfe waves and plots them

An animated chart panel that shows the equity drawdown of the account in real time, the closed result of the day, week and month, and one line for every Expert Advisor running on the account.

An animated 24-hour dial of the Sydney, Tokyo, London and New York sessions with automatic daylight saving time, a countdown to the close of the current candle, and live spread and day range. The panel collapses into a bar and can be dragged on the chart.

Calculate DST for USA, EUR, AUD and RUB and the offset time of the broker automatically from the 70's until 2030 - even in the Strategy Tester of MQ.

The final seventh part of the book discusses the advanced capabilities of the MQL5 API, which will be useful when developing programs for MetaTrader 5. These include custom financial symbols, built-in economic calendar events, and general-purpose technologies such as networking, databases, and cryptography.

This indicator displays current events on the chart and allows you to export the calendar to archives for backtesting, automatically fixing time discrepancies between the history of bars and the history of events. This is an improved version of CalendarMonitorCached indicator from the algotrading book.

The SuperTrend Indicator is a dynamic trend-following tool based on ATR. It plots a colored line above or below price to indicate bullish or bearish conditions. When the price crosses the line, a signal arrow appears. Fully customizable with ATR period, multiplier, arrows, labels, and colors. Suitable for all instruments and timeframes. Ideal for scalping, swing, and intraday trading. Combine it with other indicators for stronger setups.

In Part 5 of the book, we'll delve deeper into the APIs associated with algorithmic trading, including financial data analysis and processing, chart visualization, automation, and user interactions.

Working with keyboard data

A simple comment.

Highlights the Forex Market Sessions (Sydney, Tokyo, London, New York).

The indicator searches the chart for Price Action patterns "Pin Bar" and puts icons on the bar with the found pattern.

This is an OHLC candlestick chart which records the highest ask and lowest bid on each new bar

The indicator implements one of the non-linear smoothing algorithms

An advanced, institutional-grade trend-following engine using Z-Score adaptive volatility, smart money volume filters, and a real-time MTF dashboard.

RSI Grid Overlap Pro is a professional MT5 Expert Advisor combining RSI-based market entries with an adaptive grid recovery system. It features intelligent overlap order management to reduce drawdown, plus virtual trailing stop, breakeven, and three lot sizing modes — fixed, balance-proportional, and risk-based — making it suitable for both conservative and aggressive trading styles.

Market Replay Tool is an MT5 utility that seamlessly merges a Market Replay simulator with interactive TradingView-style Long & Short drawing tools. It allows traders to backtest strategies on historical data with adjustable playback speeds, while effortlessly mapping out risk-to-reward setups using dynamic, draggable entry, stop-loss, and take-profit visual boxes directly on the chart.

Displays daily, weekly and monthly ATR, the current high–low range, the range as a percentage of ATR, and price movement from each period's open.

Part 2 "MQL5 programming fundamentals" is an introduction to the key concepts of this programming language. This part of the book is devoted to data types, identifiers, variables, expressions, and operators. You will learn how to combine different instructions to form the program logic.

AO - Awesome Oscillator - without iAO() beginner tutorial to learn how to code in MQL5

Idea by Andrey F. Zelinsky, based on an indicator by William Blau

The AutoCloseOnProfitLoss Expert Advisor (EA) is a powerful automation tool for MetaTrader 5, designed to close all open positions when predefined profit or loss targets are reached

Candle Replay Magnifier visually replays historical candles over the current chart area for comparative analysis. This indicator overlays past price bars from a selected date onto the live chart, allowing traders to study candle patterns, volatility, and structure in real time. Includes dynamic range highlighting and detailed tooltips showing open, high, low, close, range, direction, time, and volume for each replay candle.

Professional Telegram Bot integration library for MetaTrader 5. Complete solution for sending trading signals, screenshots, reports, and real-time notifications to Telegram channels and groups.

A JSON library that supports MQL4/MQL5

The script provides a quick estimation of an exponent/power factor for transformation of variable-length price increments into uniform distibution, that makes them a "random walk". The estimated value characterizes current symbol as more profitable when using in a particular trading strategy.

Monitoring memory consumption.

Rsi without Irsi() beginner tutorial to learn how to code in MQL5

The function calculates the lot size of an open position. The opening price of a deal, the price of stop loss level and the risk per deal in per cent of the deposit are passed as parameters

Functions for use instead of ChartXYToTimePrice and ChartTimePriceToXY, working correctly and quickly over the entire range of input parameters

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

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

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.

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.