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

Alerts on trendline break

Pinbar Detector is a MetaTrader indicator that tries to detect Pinbars (also known as "Pin-bar" or "Pin bar") and marks them by placing a "smiling face" symbol below the bullish Pinbars and above the bearish Pinbars. It is a pure price action indicator, which is not using any standard technical indicators in its code. The configuration of Pinbar detection can be done via the indicator's input parameters. Pinbar Detector can issue platform alerts and email alerts on detection. The indicator is available both for MT4 and MT5 versions of the trading platform.

Zig Zag indicator that relies only on a minimum % of retracement to each previous wave , and optionally , being bigger than a specific size measured in atr units.

The "False Breakouts.mq5" indicator is a tool for MetaTrader 5 that visually identifies and marks buy and sell points based on false breakouts of support and resistance. It uses buffers to display buy (blue) and sell (red) arrows, as well as lines for support (blue) and resistance (red), and additional arrows for market tops and bottoms. The indicator's main logic consists of detecting tops and bottoms based on the high and low prices of the candles, dynamically updating support and resistance levels. When the price breaks through support or resistance and then returns, the indicator generates buy or sell signals respectively. It is a useful tool for traders who operate strategies based on false breakouts.

This MQL5 indicator identifies Upward (Bullish) and Downward (Bearish) Pinbars, displayed with customizable arrows (lime for upward, red for downward). It allows fine-tuning of detection parameters like tail body ratio and protrusion. Pop-up and push notification alerts signal new pinbars. Ideal for traders seeking precise reversal pattern detection.

The script provides a set of functions for creating all standard graphical objects for use in your own developments. The functions presented in the script can be used "as is" or modified to your requirements.

This EA help you for Auto set the TP & SL by default parameter, Auto trailing stop & step for any order that you place from any device, Easy way to close all orders with 5 Button "Close All", "Close Profit", "Close Lose", "Close BUY", "Close SELL", Auto close all orders by profit or lose treshold value

This function gives me the shortened names of the timeframes Example: "M1" instead of "PERIOD_M1"

Part 3 "Object Oriented Programming in MQL5" offers an immersion into the world of object-oriented programming (OOP) in the MQL5 language. Software development often involves the complexity related to the management of multiple entities, requiring advanced technology to improve programming convenience, productivity, and quality.

ATR - Average True Range - beginner tutorial to learn how to code in MQL5

This indicator uses two moving averages to calculate the market trend and changes color depending on the trend direction.

This indicator calculates the range difference between the 'MACD and Signal lines' and also the range distance between 'the last two MACD bar'.

Real-time display of Binance quotes

This is a script to export rates and ticks of current chart's symbol into CSV-files compatible with MT5's export/import format.

Script for displaying updating data on open positions.

Population-based optimisation algorithms are collected here. The archive contains all necessary files to run the algorithms on test functions.

Copy and paste selected graphical objects between charts via Windows clipboard as text. Use Ctrl+Q on a source chart, then Ctrl+J on a target chart.

A new interface library has been developed to simplify the process of converting MT4 indicators and Expert Advisors (EAs) to MT5. This library supports most of the MetaTrader 4 functions, offering developers a unified solution for cross-platform compatibility.

An advancement of the MetaQuotes zigzag with an oscillator mode, current bar leg tracking, fib levels, and dynamic scaling

Unfortunately I had to realise that some brokers are a bit careless with the server time changeover, which I had not expected and which surprised me a lot. Here is a script with which everyone can check their broker.

Laguerre MetaTrader indicator — a completely custom indicator that doesn't rely on the standard MT4/MT5 indicators. It shows the weighted trendline in the separate window of the chart. It can be used for simple entry and exit signals. The indicator is available for both MT4 and MT5.

Time to candle Close. Dynamic text colours. Optimised for back-testing.

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

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

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.

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

A lightweight tool for manual scalping in MT5 using keyboard shortcuts

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.

Securing data transfer between client and Server could be a big challenge for you as MQL5 programmer. You may have experience in using built in MQL5 encryption systems like AES.AES can securely encrypt your data but on the other hand is not secure when it comes to sending the AES key through insecure channels. You can only rely on asymmetric encryption systems Like RSA in such cases. you keep the private key at your server side and only share the public key with your clients. Even more you can use hybrid RSA_AES approach to archive more performance

Professional panel for closing positions with 6 smart filters. Close all, by type, by symbol, or by profit/loss. Real-time P&L display. Perfect for emergency exits and risk management. Includes safety confirmations.

Fox Wave Clean - Professional Order Manager Professional EA for efficient trade management with one-click position control. Clean design, powerful functionality.

A chart-based risk monitor for prop-firm style rules: draws a live “Dead-Line” price level showing where your Daily Loss Limit or Overall Max Drawdown would be violated, based on equity, open exposure, and optional trailing drawdown.

Automates MQL5 buffer and plot index management. Eliminates manual counting, simplifies Z-order layering, and handles complex plot types (Candles, Color Lines) with a single line of code.

Adaptive VWAP Institutional: Multi-Asset Auto-Detection & DST-Accurate Session Resets (Forex 5PM NY Standard).

A professional on-chart panel for instant lot size and risk calculation. Essential for manual traders using strict risk management.

If you have access to the Expert Advisor code, you can save balance and equity charts and calculate additional optimization criteria by adding additional code from this library.

Download all OHLC data history available and save it in a file, either for just one symbol or for many in Market Watch

Draws the previous day High, Low, and Close as horizontal reference lines on the chart for a configurable number of past days. Yesterday's levels extend into today as live support and resistance, with optional touch alerts.